212200022220 has 48 divisors (see below), whose sum is σ = 596777545728. Its totient is φ = 56337388480.

The previous prime is 212200022213. The next prime is 212200022231. The reversal of 212200022220 is 22220002212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 212200022220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7776396 + ... + 7803635.

It is an arithmetic number, because the mean of its divisors is an integer number (12432865536).

Almost surely, 2^212200022220 is an apocalyptic number.

212200022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212200022220 is an abundant number, since it is smaller than the sum of its proper divisors (384577523508).

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

212200022220 is a wasteful number, since it uses less digits than its factorization.

212200022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15580270 (or 15580268 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 212200022220 its reverse (22220002212), we get a palindrome (234420024432).

The spelling of 212200022220 in words is "two hundred twelve billion, two hundred million, twenty-two thousand, two hundred twenty".