222212211222 has 32 divisors (see below), whose sum is σ = 468013057920. Its totient is φ = 70142595840.

The previous prime is 222212211217. The next prime is 222212211251. The reversal of 222212211222 is 222112212222.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 140763 + ... + 681350.

It is an arithmetic number, because the mean of its divisors is an integer number (14625408060).

Almost surely, 2^222212211222 is an apocalyptic number.

222212211222 is an abundant number, since it is smaller than the sum of its proper divisors (245800846698).

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

222212211222 is a wasteful number, since it uses less digits than its factorization.

222212211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824508.

The product of its digits is 512, while the sum is 21.

Adding to 222212211222 its reverse (222112212222), we get a palindrome (444324423444).

The spelling of 222212211222 in words is "two hundred twenty-two billion, two hundred twelve million, two hundred eleven thousand, two hundred twenty-two".