21321103300 has 36 divisors (see below), whose sum is σ = 52876337920. Its totient is φ = 7310092320.

The previous prime is 21321103277. The next prime is 21321103393. The reversal of 21321103300 is 330112312.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15228660 + ... + 15230059.

Almost surely, 2^21321103300 is an apocalyptic number.

21321103300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21321103300 is an abundant number, since it is smaller than the sum of its proper divisors (31555234620).

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

21321103300 is a wasteful number, since it uses less digits than its factorization.

21321103300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30458740 (or 30458733 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21321103300 its reverse (330112312), we get a palindrome (21651215612).

The spelling of 21321103300 in words is "twenty-one billion, three hundred twenty-one million, one hundred three thousand, three hundred".