21031200002032 has 60 divisors (see below), whose sum is σ = 44805089373336. Its totient is φ = 9484362357120.

The previous prime is 21031200002023. The next prime is 21031200002053. The reversal of 21031200002032 is 23020000213012.

It is a super-2 number, since 2×21031200002032² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 21031200001997 and 21031200002015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 865663 + ... + 6543070.

Almost surely, 2^{21031200002032} is an apocalyptic number.

21031200002032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21031200002032 is an abundant number, since it is smaller than the sum of its proper divisors (23773889371304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21031200002032 is a wasteful number, since it uses less digits than its factorization.

21031200002032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7409006 (or 7408873 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21031200002032 its reverse (23020000213012), we get a palindrome (44051200215044).

The spelling of 21031200002032 in words is "twenty-one trillion, thirty-one billion, two hundred million, two thousand, thirty-two".