21410202100 has 54 divisors (see below), whose sum is σ = 54045479670. Its totient is φ = 7340639040.

The previous prime is 21410202097. The next prime is 21410202217. The reversal of 21410202100 is 120201412.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1265509476 + 20144692624 = 35574^2 + 141932^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2179815 + ... + 2189614.

Almost surely, 2^21410202100 is an apocalyptic number.

21410202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21410202100 is an abundant number, since it is smaller than the sum of its proper divisors (32635277570).

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

21410202100 is a wasteful number, since it uses less digits than its factorization.

21410202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4369457 (or 4369443 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21410202100 its reverse (120201412), we get a palindrome (21530403512).

The spelling of 21410202100 in words is "twenty-one billion, four hundred ten million, two hundred two thousand, one hundred".