16915333121 has 12 divisors (see below), whose sum is σ = 17539118100. Its totient is φ = 16294330080.

The previous prime is 16915333087. The next prime is 16915333133. The reversal of 16915333121 is 12133351961.

It can be written as a sum of positive squares in 2 ways, for example, as 13041640000 + 3873693121 = 114200^2 + 62239^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16915333121 is a prime.

It is a super-2 number, since 2×16915333121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16915333151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9454295 + ... + 9456083.

It is an arithmetic number, because the mean of its divisors is an integer number (1461593175).

Almost surely, 2^16915333121 is an apocalyptic number.

It is an amenable number.

16915333121 is a deficient number, since it is larger than the sum of its proper divisors (623784979).

16915333121 is an frugal number, since it uses more digits than its factorization.

16915333121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960 (or 2389 counting only the distinct ones).

The product of its digits is 14580, while the sum is 35.

The spelling of 16915333121 in words is "sixteen billion, nine hundred fifteen million, three hundred thirty-three thousand, one hundred twenty-one".