212122122200 has 24 divisors (see below), whose sum is σ = 493183934580. Its totient is φ = 84848848800.

The previous prime is 212122122151. The next prime is 212122122227. The reversal of 212122122200 is 2221221212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 530305106 + ... + 530305505.

Almost surely, 2^212122122200 is an apocalyptic number.

212122122200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212122122200 is an abundant number, since it is smaller than the sum of its proper divisors (281061812380).

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

212122122200 is a wasteful number, since it uses less digits than its factorization.

212122122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060610627 (or 1060610618 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212122122200 its reverse (2221221212), we get a palindrome (214343343412).

It can be divided in two parts, 21212 and 2122200, that added together give a palindrome (2143412).

The spelling of 212122122200 in words is "two hundred twelve billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred".