222122889918 has 12 divisors (see below), whose sum is σ = 481266261528. Its totient is φ = 74040963300.

The previous prime is 222122889917. The next prime is 222122889941. The reversal of 222122889918 is 819988221222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222122889917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6170080258 + ... + 6170080293.

It is an arithmetic number, because the mean of its divisors is an integer number (40105521794).

Almost surely, 2^222122889918 is an apocalyptic number.

222122889918 is an abundant number, since it is smaller than the sum of its proper divisors (259143371610).

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

222122889918 is a wasteful number, since it uses less digits than its factorization.

222122889918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12340160559 (or 12340160556 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 54.

The spelling of 222122889918 in words is "two hundred twenty-two billion, one hundred twenty-two million, eight hundred eighty-nine thousand, nine hundred eighteen".