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1220022441 = 321112323459
BaseRepresentation
bin100100010111000…
…0001000010101001
310011000200120011100
41020232001002221
54444311204231
6321021152013
742143006511
oct11056010251
93130616140
101220022441
11576741a10
122a06bb609
131659b4b91
14b8062841
15721931e6
hex48b810a9

1220022441 has 12 divisors (see below), whose sum is σ = 1922459760. Its totient is φ = 739407480.

The previous prime is 1220022439. The next prime is 1220022457. The reversal of 1220022441 is 1442200221.

1220022441 is a `hidden beast` number, since 1 + 2 + 200 + 22 + 441 = 666.

It is not a de Polignac number, because 1220022441 - 21 = 1220022439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220022421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6161631 + ... + 6161828.

It is an arithmetic number, because the mean of its divisors is an integer number (160204980).

Almost surely, 21220022441 is an apocalyptic number.

1220022441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220022441 is a deficient number, since it is larger than the sum of its proper divisors (702437319).

1220022441 is a wasteful number, since it uses less digits than its factorization.

1220022441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12323476 (or 12323473 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1220022441 is about 34928.8196336492. The cubic root of 1220022441 is about 1068.5362817141.

Adding to 1220022441 its reverse (1442200221), we get a palindrome (2662222662).

The spelling of 1220022441 in words is "one billion, two hundred twenty million, twenty-two thousand, four hundred forty-one".

Divisors: 1 3 9 11 33 99 12323459 36970377 110911131 135558049 406674147 1220022441