212221002222200 has 48 divisors (see below), whose sum is σ = 493824666554160. Its totient is φ = 84817719360000.

The previous prime is 212221002222161. The next prime is 212221002222263. The reversal of 212221002222200 is 2222200122212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 441518756 + ... + 441999155.

It is an arithmetic number, because the mean of its divisors is an integer number (10288013886545).

Almost surely, 2^{212221002222200} is an apocalyptic number.

212221002222200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212221002222200 is an abundant number, since it is smaller than the sum of its proper divisors (281603664331960).

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

212221002222200 is a wasteful number, since it uses less digits than its factorization.

212221002222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883519128 (or 883519119 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 212221002222200 its reverse (2222200122212), we get a palindrome (214443202344412).

The spelling of 212221002222200 in words is "two hundred twelve trillion, two hundred twenty-one billion, two million, two hundred twenty-two thousand, two hundred".