212210222120 has 64 divisors (see below), whose sum is σ = 516031946640. Its totient is φ = 78075648000.

The previous prime is 212210222101. The next prime is 212210222251. The reversal of 212210222120 is 21222012212.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 64303830724 + 147906391396 = 253582^2 + 384586^2 .

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, 580031 + ... + 872270.

Almost surely, 2^212210222120 is an apocalyptic number.

212210222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212210222120 is an abundant number, since it is smaller than the sum of its proper divisors (303821724520).

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

212210222120 is a wasteful number, since it uses less digits than its factorization.

212210222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452606 (or 1452602 counting only the distinct ones).

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

Adding to 212210222120 its reverse (21222012212), we get a palindrome (233432234332).

The spelling of 212210222120 in words is "two hundred twelve billion, two hundred ten million, two hundred twenty-two thousand, one hundred twenty".