21231300102 has 16 divisors (see below), whose sum is σ = 44960400432. Its totient is φ = 6660800000.

The previous prime is 21231300091. The next prime is 21231300137. The reversal of 21231300102 is 20100313212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104074899 + ... + 104075102.

It is an arithmetic number, because the mean of its divisors is an integer number (2810025027).

Almost surely, 2^21231300102 is an apocalyptic number.

21231300102 is an abundant number, since it is smaller than the sum of its proper divisors (23729100330).

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

21231300102 is a wasteful number, since it uses less digits than its factorization.

21231300102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208150023.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21231300102 its reverse (20100313212), we get a palindrome (41331613314).

The spelling of 21231300102 in words is "twenty-one billion, two hundred thirty-one million, three hundred thousand, one hundred two".