210202110200020 has 24 divisors (see below), whose sum is σ = 441430842820968. Its totient is φ = 84079622860800.

The previous prime is 210202110200003. The next prime is 210202110200041. The reversal of 210202110200020 is 20002011202012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2038504328644 + 208163605871376 = 1427762^2 + 14427876^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74914141 + ... + 77669380.

It is an arithmetic number, because the mean of its divisors is an integer number (18392951784207).

Almost surely, 2^{210202110200020} is an apocalyptic number.

210202110200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210202110200020 is an abundant number, since it is smaller than the sum of its proper divisors (231228732620948).

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

210202110200020 is a wasteful number, since it uses less digits than its factorization.

210202110200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152652411 (or 152652409 counting only the distinct ones).

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

Adding to 210202110200020 its reverse (20002011202012), we get a palindrome (230204121402032).

The spelling of 210202110200020 in words is "two hundred ten trillion, two hundred two billion, one hundred ten million, two hundred thousand, twenty".