21012654300 has 108 divisors (see below), whose sum is σ = 66826144728. Its totient is φ = 5093968000.

The previous prime is 21012654191. The next prime is 21012654319. The reversal of 21012654300 is 345621012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 253131 + ... + 325730.

Almost surely, 2^21012654300 is an apocalyptic number.

21012654300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21012654300 is an abundant number, since it is smaller than the sum of its proper divisors (45813490428).

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

21012654300 is a wasteful number, since it uses less digits than its factorization.

21012654300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578900 (or 578882 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The spelling of 21012654300 in words is "twenty-one billion, twelve million, six hundred fifty-four thousand, three hundred".