212220122000 has 40 divisors (see below), whose sum is σ = 513148259832. Its totient is φ = 84888048000.

The previous prime is 212220121999. The next prime is 212220122053. The reversal of 212220122000 is 221022212.

It can be written as a sum of positive squares in 4 ways, for example, as 1430416 + 212218691584 = 1196^2 + 460672^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53053031 + ... + 53057030.

Almost surely, 2^212220122000 is an apocalyptic number.

212220122000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212220122000 is an abundant number, since it is smaller than the sum of its proper divisors (300928137832).

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

212220122000 is a wasteful number, since it uses less digits than its factorization.

212220122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106110084 (or 106110068 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 212220122000 its reverse (221022212), we get a palindrome (212441144212).

The spelling of 212220122000 in words is "two hundred twelve billion, two hundred twenty million, one hundred twenty-two thousand".