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1222212122 = 22110128961
BaseRepresentation
bin100100011011001…
…0111101000011010
310011011210210211122
41020312113220122
510000341241442
6321140125242
742200426435
oct11066275032
93134723748
101222212122
115779a806a
122a1396822
131662a0751
14b847281c
1572476dd2
hex48d97a1a

1222212122 has 8 divisors (see below), whose sum is σ = 1833468372. Its totient is φ = 611056000.

The previous prime is 1222212119. The next prime is 1222212133. The reversal of 1222212122 is 2212122221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1200691801 + 21520321 = 34651^2 + 4639^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1222212122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27722 + ... + 56682.

Almost surely, 21222212122 is an apocalyptic number.

1222212122 is a deficient number, since it is larger than the sum of its proper divisors (611256250).

1222212122 is a wasteful number, since it uses less digits than its factorization.

1222212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50064.

The product of its digits is 128, while the sum is 17.

The square root of 1222212122 is about 34960.1504859461. The cubic root of 1222212122 is about 1069.1751648260.

Adding to 1222212122 its reverse (2212122221), we get a palindrome (3434334343).

The spelling of 1222212122 in words is "one billion, two hundred twenty-two million, two hundred twelve thousand, one hundred twenty-two".

Divisors: 1 2 21101 28961 42202 57922 611106061 1222212122