21013021203100 has 36 divisors (see below), whose sum is σ = 46658680578664. Its totient is φ = 8209738514880.

The previous prime is 21013021203089. The next prime is 21013021203151. The reversal of 21013021203100 is 130212031012.

It is a super-2 number, since 2×21013021203100² (a number of 27 digits) contains 22 as substring.

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, 2443370259 + ... + 2443378858.

Almost surely, 2^{21013021203100} is an apocalyptic number.

21013021203100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21013021203100 is an abundant number, since it is smaller than the sum of its proper divisors (25645659375564).

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

21013021203100 is a wasteful number, since it uses less digits than its factorization.

21013021203100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4886749174 (or 4886749167 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21013021203100 its reverse (130212031012), we get a palindrome (21143233234112).

The spelling of 21013021203100 in words is "twenty-one trillion, thirteen billion, twenty-one million, two hundred three thousand, one hundred".