21033104012 has 6 divisors (see below), whose sum is σ = 36807932028. Its totient is φ = 10516552004.

The previous prime is 21033103999. The next prime is 21033104033. The reversal of 21033104012 is 21040133012.

It is a super-2 number, since 2×21033104012² (a number of 21 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, 2629137998 + ... + 2629138005.

It is an arithmetic number, because the mean of its divisors is an integer number (6134655338).

Almost surely, 2^21033104012 is an apocalyptic number.

It is an amenable number.

21033104012 is a deficient number, since it is larger than the sum of its proper divisors (15774828016).

21033104012 is a wasteful number, since it uses less digits than its factorization.

21033104012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5258276007 (or 5258276005 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21033104012 its reverse (21040133012), we get a palindrome (42073237024).

The spelling of 21033104012 in words is "twenty-one billion, thirty-three million, one hundred four thousand, twelve".