202122220 has 12 divisors (see below), whose sum is σ = 424456704. Its totient is φ = 80848880.

The previous prime is 202122203. The next prime is 202122233. The reversal of 202122220 is 22221202.

It is a self number, because there is not a number n which added to its sum of digits gives 202122220.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5053036 + ... + 5053075.

It is an arithmetic number, because the mean of its divisors is an integer number (35371392).

Almost surely, 2^202122220 is an apocalyptic number.

202122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202122220 is an abundant number, since it is smaller than the sum of its proper divisors (222334484).

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

202122220 is a wasteful number, since it uses less digits than its factorization.

202122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106120 (or 10106118 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 202122220 is about 14216.9694379639. The cubic root of 202122220 is about 586.8647438649.

Adding to 202122220 its reverse (22221202), we get a palindrome (224343422).

The spelling of 202122220 in words is "two hundred two million, one hundred twenty-two thousand, two hundred twenty".