222202201220 has 12 divisors (see below), whose sum is σ = 466624622604. Its totient is φ = 88880880480.

The previous prime is 222202201153. The next prime is 222202201231. The reversal of 222202201220 is 22102202222.

It can be written as a sum of positive squares in 2 ways, for example, as 85751751556 + 136450449664 = 292834^2 + 369392^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5555055011 + ... + 5555055050.

It is an arithmetic number, because the mean of its divisors is an integer number (38885385217).

Almost surely, 2^222202201220 is an apocalyptic number.

222202201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222202201220 is an abundant number, since it is smaller than the sum of its proper divisors (244422421384).

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

222202201220 is a wasteful number, since it uses less digits than its factorization.

222202201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11110110070 (or 11110110068 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 222202201220 its reverse (22102202222), we get a palindrome (244304403442).

The spelling of 222202201220 in words is "two hundred twenty-two billion, two hundred two million, two hundred one thousand, two hundred twenty".