21102210402300 has 108 divisors (see below), whose sum is σ = 66178913011120. Its totient is φ = 5624260842240.

The previous prime is 21102210402283. The next prime is 21102210402323. The reversal of 21102210402300 is 320401220112.

It is a happy number.

21102210402300 is a `hidden beast` number, since 2 + 1 + 10 + 221 + 0 + 402 + 30 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 4548097 + ... + 7930296.

Almost surely, 2^{21102210402300} is an apocalyptic number.

21102210402300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21102210402300 is an abundant number, since it is smaller than the sum of its proper divisors (45076702608820).

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

21102210402300 is a wasteful number, since it uses less digits than its factorization.

21102210402300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12480292 (or 12480282 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21102210402300 its reverse (320401220112), we get a palindrome (21422611622412).

The spelling of 21102210402300 in words is "twenty-one trillion, one hundred two billion, two hundred ten million, four hundred two thousand, three hundred".