21046064012 has 24 divisors (see below), whose sum is σ = 37627343040. Its totient is φ = 10295550720.

The previous prime is 21046063993. The next prime is 21046064041.

21046064012 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21046064012² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568814 + ... + 604682.

It is an arithmetic number, because the mean of its divisors is an integer number (1567805960).

Almost surely, 2^21046064012 is an apocalyptic number.

It is an amenable number.

21046064012 is a deficient number, since it is larger than the sum of its proper divisors (16581279028).

21046064012 is a wasteful number, since it uses less digits than its factorization.

21046064012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39041 (or 39039 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

It can be divided in two parts, 210460 and 64012, that added together give a palindrome (274472).

The spelling of 21046064012 in words is "twenty-one billion, forty-six million, sixty-four thousand, twelve".