202122112020 has 24 divisors (see below), whose sum is σ = 565941913824. Its totient is φ = 53899229856.

The previous prime is 202122111979. The next prime is 202122112033. The reversal of 202122112020 is 20211221202.

202122112020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684350874 + ... + 1684350993.

It is an arithmetic number, because the mean of its divisors is an integer number (23580913076).

Almost surely, 2^202122112020 is an apocalyptic number.

202122112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202122112020 is an abundant number, since it is smaller than the sum of its proper divisors (363819801804).

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

202122112020 is a wasteful number, since it uses less digits than its factorization.

202122112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368701879 (or 3368701877 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202122112020 its reverse (20211221202), we get a palindrome (222333333222).

The spelling of 202122112020 in words is "two hundred two billion, one hundred twenty-two million, one hundred twelve thousand, twenty".