21012000030232 has 8 divisors (see below), whose sum is σ = 39397500056700. Its totient is φ = 10506000015112.

The previous prime is 21012000030221. The next prime is 21012000030251. The reversal of 21012000030232 is 23203000021012.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1313250001882 + ... + 1313250001897.

Almost surely, 2^{21012000030232} is an apocalyptic number.

It is an amenable number.

21012000030232 is a deficient number, since it is larger than the sum of its proper divisors (18385500026468).

21012000030232 is a wasteful number, since it uses less digits than its factorization.

21012000030232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626500003785 (or 2626500003781 counting only the distinct ones).

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

Adding to 21012000030232 its reverse (23203000021012), we get a palindrome (44215000051244).

The spelling of 21012000030232 in words is "twenty-one trillion, twelve billion, thirty thousand, two hundred thirty-two".