202012220 has 24 divisors (see below), whose sum is σ = 442671264. Its totient is φ = 77291456.

The previous prime is 202012211. The next prime is 202012229. The reversal of 202012220 is 22210202.

It is an interprime number because it is at equal distance from previous prime (202012211) and next prime (202012229).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202012229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219119 + ... + 220038.

It is an arithmetic number, because the mean of its divisors is an integer number (18444636).

Almost surely, 2^202012220 is an apocalyptic number.

202012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202012220 is an abundant number, since it is smaller than the sum of its proper divisors (240659044).

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

202012220 is a wasteful number, since it uses less digits than its factorization.

202012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439189 (or 439187 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 202012220 is about 14213.1002951502. The cubic root of 202012220 is about 586.7582623571.

Adding to 202012220 its reverse (22210202), we get a palindrome (224222422).

The spelling of 202012220 in words is "two hundred two million, twelve thousand, two hundred twenty".