212220022200 has 96 divisors (see below), whose sum is σ = 680567713200. Its totient is φ = 54640552960.

The previous prime is 212220022129. The next prime is 212220022237. The reversal of 212220022200 is 2220022212.

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 212220022200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6080877 + ... + 6115676.

Almost surely, 2^212220022200 is an apocalyptic number.

212220022200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212220022200 is an abundant number, since it is smaller than the sum of its proper divisors (468347691000).

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

212220022200 is a wasteful number, since it uses less digits than its factorization.

212220022200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12196601 (or 12196592 counting only the distinct ones).

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

Adding to 212220022200 its reverse (2220022212), we get a palindrome (214440044412).

The spelling of 212220022200 in words is "two hundred twelve billion, two hundred twenty million, twenty-two thousand, two hundred".