210122202021020 has 24 divisors (see below), whose sum is σ = 441794086671168. Its totient is φ = 83946507012800.

The previous prime is 210122202020993. The next prime is 210122202021041. The reversal of 210122202021020 is 20120202221012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 210122202021020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6398345396 + ... + 6398378235.

It is an arithmetic number, because the mean of its divisors is an integer number (18408086944632).

Almost surely, 2^{210122202021020} is an apocalyptic number.

210122202021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210122202021020 is an abundant number, since it is smaller than the sum of its proper divisors (231671884650148).

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

210122202021020 is a wasteful number, since it uses less digits than its factorization.

210122202021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12796724461 (or 12796724459 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 210122202021020 its reverse (20120202221012), we get a palindrome (230242404242032).

The spelling of 210122202021020 in words is "two hundred ten trillion, one hundred twenty-two billion, two hundred two million, twenty-one thousand, twenty".