222211211222120 has 32 divisors (see below), whose sum is σ = 500394316074120. Its totient is φ = 88809979453440.

The previous prime is 222211211222087. The next prime is 222211211222131. The reversal of 222211211222120 is 21222112112222.

It can be written as a sum of positive squares in 4 ways, for example, as 159937553876164 + 62273657345956 = 12646642^2 + 7891366^2 .

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, 2328234041 + ... + 2328329480.

Almost surely, 2^{222211211222120} is an apocalyptic number.

222211211222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222211211222120 is an abundant number, since it is smaller than the sum of its proper divisors (278183104852000).

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

222211211222120 is a wasteful number, since it uses less digits than its factorization.

222211211222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4656564725 (or 4656564721 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 222211211222120 its reverse (21222112112222), we get a palindrome (243433323334342).

The spelling of 222211211222120 in words is "two hundred twenty-two trillion, two hundred eleven billion, two hundred eleven million, two hundred twenty-two thousand, one hundred twenty".