21310231212300 has 72 divisors (see below), whose sum is σ = 63646557248512. Its totient is φ = 5499414504000.

The previous prime is 21310231212241. The next prime is 21310231212311. The reversal of 21310231212300 is 321213201312.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1145702056 + ... + 1145720655.

Almost surely, 2^{21310231212300} is an apocalyptic number.

21310231212300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21310231212300 is an abundant number, since it is smaller than the sum of its proper divisors (42336326036212).

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

21310231212300 is a wasteful number, since it uses less digits than its factorization.

21310231212300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291422759 (or 2291422752 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21310231212300 its reverse (321213201312), we get a palindrome (21631444413612).

The spelling of 21310231212300 in words is "twenty-one trillion, three hundred ten billion, two hundred thirty-one million, two hundred twelve thousand, three hundred".