222211111220 has 24 divisors (see below), whose sum is σ = 533306667264. Its totient is φ = 76186666656.

The previous prime is 222211111211. The next prime is 222211111261. The reversal of 222211111220 is 22111112222.

It is a congruent number.

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, 793610972 + ... + 793611251.

It is an arithmetic number, because the mean of its divisors is an integer number (22221111136).

Almost surely, 2^222211111220 is an apocalyptic number.

222211111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222211111220 is an abundant number, since it is smaller than the sum of its proper divisors (311095556044).

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

222211111220 is a wasteful number, since it uses less digits than its factorization.

222211111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587222239 (or 1587222237 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222211111220 its reverse (22111112222), we get a palindrome (244322223442).

It can be divided in two parts, 2 and 22211111220, that added together give a palindrome (22211111222).

The spelling of 222211111220 in words is "two hundred twenty-two billion, two hundred eleven million, one hundred eleven thousand, two hundred twenty".