202122211220 has 24 divisors (see below), whose sum is σ = 434327730144. Its totient is φ = 78968677536.

The previous prime is 202122211171. The next prime is 202122211243. The reversal of 202122211220 is 22112221202.

It is a happy number.

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, 117512054 + ... + 117513773.

It is an arithmetic number, because the mean of its divisors is an integer number (18096988756).

Almost surely, 2^202122211220 is an apocalyptic number.

202122211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202122211220 is an abundant number, since it is smaller than the sum of its proper divisors (232205518924).

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

202122211220 is a wasteful number, since it uses less digits than its factorization.

202122211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235025879 (or 235025877 counting only the distinct ones).

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

Adding to 202122211220 its reverse (22112221202), we get a palindrome (224234432422).

The spelling of 202122211220 in words is "two hundred two billion, one hundred twenty-two million, two hundred eleven thousand, two hundred twenty".