21002012111300 has 72 divisors (see below), whose sum is σ = 49718232308640. Its totient is φ = 7636981363200.

The previous prime is 21002012111279. The next prime is 21002012111309. The reversal of 21002012111300 is 311121020012.

It is not an unprimeable number, because it can be changed into a prime (21002012111309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118554191 + ... + 118731209.

Almost surely, 2^{21002012111300} is an apocalyptic number.

21002012111300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21002012111300 is an abundant number, since it is smaller than the sum of its proper divisors (28716220197340).

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

21002012111300 is a wasteful number, since it uses less digits than its factorization.

21002012111300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284901 (or 284894 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21002012111300 its reverse (311121020012), we get a palindrome (21313133131312).

The spelling of 21002012111300 in words is "twenty-one trillion, two billion, twelve million, one hundred eleven thousand, three hundred".