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2121011453 = 11306762869
BaseRepresentation
bin111111001101100…
…0001000011111101
312110211001112201202
41332123001003331
513320434331303
6550244345245
7103363204601
oct17633010375
95424045652
102121011453
1199928a330
124b23a5225
1327a566782
14161999501
15c6317c88
hex7e6c10fd

2121011453 has 8 divisors (see below), whose sum is σ = 2314621920. Its totient is φ = 1927532880.

The previous prime is 2121011449. The next prime is 2121011479. The reversal of 2121011453 is 3541101212.

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

It is a cyclic number.

It is not a de Polignac number, because 2121011453 - 22 = 2121011449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121011353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2303 + ... + 65171.

It is an arithmetic number, because the mean of its divisors is an integer number (289327740).

Almost surely, 22121011453 is an apocalyptic number.

It is an amenable number.

2121011453 is a deficient number, since it is larger than the sum of its proper divisors (193610467).

2121011453 is a wasteful number, since it uses less digits than its factorization.

2121011453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65947.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2121011453 is about 46054.4401008198. The cubic root of 2121011453 is about 1284.8359246872.

Adding to 2121011453 its reverse (3541101212), we get a palindrome (5662112665).

The spelling of 2121011453 in words is "two billion, one hundred twenty-one million, eleven thousand, four hundred fifty-three".

Divisors: 1 11 3067 33737 62869 691559 192819223 2121011453