222212120212220 has 24 divisors (see below), whose sum is σ = 467440419169584. Its totient is φ = 88733425851776.

The previous prime is 222212120212211. The next prime is 222212120212273. The reversal of 222212120212220 is 22212021212222.

It is a super-2 number, since 2×222212120212220² (a number of 29 digits) contains 22 as substring.

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, 9463877537 + ... + 9463901016.

It is an arithmetic number, because the mean of its divisors is an integer number (19476684132066).

Almost surely, 2^{222212120212220} is an apocalyptic number.

222212120212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222212120212220 is an abundant number, since it is smaller than the sum of its proper divisors (245228298957364).

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

222212120212220 is a wasteful number, since it uses less digits than its factorization.

222212120212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18927779149 (or 18927779147 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 222212120212220 its reverse (22212021212222), we get a palindrome (244424141424442).

The spelling of 222212120212220 in words is "two hundred twenty-two trillion, two hundred twelve billion, one hundred twenty million, two hundred twelve thousand, two hundred twenty".