202112012212220 has 48 divisors (see below), whose sum is σ = 463021481327328. Its totient is φ = 73495081109760.

The previous prime is 202112012212193. The next prime is 202112012212247. The reversal of 202112012212220 is 22212210211202.

It is an interprime number because it is at equal distance from previous prime (202112012212193) and next prime (202112012212247).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 202112012212192 and 202112012212201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100630862 + ... + 102619658.

It is an arithmetic number, because the mean of its divisors is an integer number (9646280860986).

Almost surely, 2^{202112012212220} is an apocalyptic number.

202112012212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202112012212220 is an abundant number, since it is smaller than the sum of its proper divisors (260909469115108).

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

202112012212220 is a wasteful number, since it uses less digits than its factorization.

202112012212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450750 (or 2450748 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 202112012212220 its reverse (22212210211202), we get a palindrome (224324222423422).

The spelling of 202112012212220 in words is "two hundred two trillion, one hundred twelve billion, twelve million, two hundred twelve thousand, two hundred twenty".