21032013365512 has 8 divisors (see below), whose sum is σ = 39435025060350. Its totient is φ = 10516006682752.

The previous prime is 21032013365509. The next prime is 21032013365579. The reversal of 21032013365512 is 21556331023012.

It can be written as a sum of positive squares in only one way, i.e., 20519033682436 + 512979683076 = 4529794^2 + 716226^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×21032013365512² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1314500835337 + ... + 1314500835352.

Almost surely, 2^{21032013365512} is an apocalyptic number.

It is an amenable number.

21032013365512 is a deficient number, since it is larger than the sum of its proper divisors (18403011694838).

21032013365512 is a wasteful number, since it uses less digits than its factorization.

21032013365512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629001670695 (or 2629001670691 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

Adding to 21032013365512 its reverse (21556331023012), we get a palindrome (42588344388524).

The spelling of 21032013365512 in words is "twenty-one trillion, thirty-two billion, thirteen million, three hundred sixty-five thousand, five hundred twelve".