210021020210100 has 72 divisors (see below), whose sum is σ = 662902711073568. Its totient is φ = 50914186716800.

The previous prime is 210021020210087. The next prime is 210021020210167. The reversal of 210021020210100 is 1012020120012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31821363399 + ... + 31821369998.

It is an arithmetic number, because the mean of its divisors is an integer number (9206982098244).

Almost surely, 2^{210021020210100} is an apocalyptic number.

210021020210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210021020210100 is an abundant number, since it is smaller than the sum of its proper divisors (452881690863468).

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

210021020210100 is a wasteful number, since it uses less digits than its factorization.

210021020210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63642733425 (or 63642733418 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210021020210100 its reverse (1012020120012), we get a palindrome (211033040330112).

The spelling of 210021020210100 in words is "two hundred ten trillion, twenty-one billion, twenty million, two hundred ten thousand, one hundred".