21000330325236 has 12 divisors (see below), whose sum is σ = 49000770758912. Its totient is φ = 7000110108408.

The previous prime is 21000330325223. The next prime is 21000330325243. The reversal of 21000330325236 is 63252303300012.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875013763540 + ... + 875013763563.

Almost surely, 2^{21000330325236} is an apocalyptic number.

It is an amenable number.

21000330325236 is an abundant number, since it is smaller than the sum of its proper divisors (28000440433676).

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

21000330325236 is a wasteful number, since it uses less digits than its factorization.

21000330325236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750027527110 (or 1750027527108 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 30.

Adding to 21000330325236 its reverse (63252303300012), we get a palindrome (84252633625248).

The spelling of 21000330325236 in words is "twenty-one trillion, three hundred thirty million, three hundred twenty-five thousand, two hundred thirty-six".