202120100022 has 16 divisors (see below), whose sum is σ = 415165611312. Its totient is φ = 65552464800.

The previous prime is 202120099991. The next prime is 202120100023. The reversal of 202120100022 is 220001021202.

It is a junction number, because it is equal to n+sod(n) for n = 202120099980 and 202120100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120100023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 455225229 + ... + 455225672.

It is an arithmetic number, because the mean of its divisors is an integer number (25947850707).

Almost surely, 2^202120100022 is an apocalyptic number.

202120100022 is an abundant number, since it is smaller than the sum of its proper divisors (213045511290).

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

202120100022 is a wasteful number, since it uses less digits than its factorization.

202120100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910450943.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 202120100022 its reverse (220001021202), we get a palindrome (422121121224).

The spelling of 202120100022 in words is "two hundred two billion, one hundred twenty million, one hundred thousand, twenty-two".