21364267100 has 36 divisors (see below), whose sum is σ = 50575049448. Its totient is φ = 7768824000.

The previous prime is 21364267073. The next prime is 21364267123. The reversal of 21364267100 is 176246312.

It is a congruent number.

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, 9709931 + ... + 9712130.

Almost surely, 2^21364267100 is an apocalyptic number.

21364267100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21364267100 is an abundant number, since it is smaller than the sum of its proper divisors (29210782348).

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

21364267100 is a wasteful number, since it uses less digits than its factorization.

21364267100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19422086 (or 19422079 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 21364267100 in words is "twenty-one billion, three hundred sixty-four million, two hundred sixty-seven thousand, one hundred".