222217871956 has 12 divisors (see below), whose sum is σ = 388887004800. Its totient is φ = 111107299160.

The previous prime is 222217871929. The next prime is 222217871971. The reversal of 222217871956 is 659178712222.

It is a super-2 number, since 2×222217871956² (a number of 23 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 3 ways as a sum of consecutive naturals, for example, 73060 + ... + 670651.

It is an arithmetic number, because the mean of its divisors is an integer number (32407250400).

Almost surely, 2^222217871956 is an apocalyptic number.

It is an amenable number.

222217871956 is a deficient number, since it is larger than the sum of its proper divisors (166669132844).

222217871956 is a wasteful number, since it uses less digits than its factorization.

222217871956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818414 (or 818412 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 52.

The spelling of 222217871956 in words is "two hundred twenty-two billion, two hundred seventeen million, eight hundred seventy-one thousand, nine hundred fifty-six".