218750113922 has 6 divisors (see below), whose sum is σ = 328126163043. Its totient is φ = 109374726242.

The previous prime is 218750113913. The next prime is 218750113931. The reversal of 218750113922 is 229311057812.

It is an interprime number because it is at equal distance from previous prime (218750113913) and next prime (218750113931).

It can be written as a sum of positive squares in only one way, i.e., 109375056961 + 109375056961 = 330719^2 + 330719^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=330719.

It is a super-2 number, since 2×218750113922² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 218750113922.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 496079 + ... + 826797.

Almost surely, 2^218750113922 is an apocalyptic number.

218750113922 is a deficient number, since it is larger than the sum of its proper divisors (109376049121).

218750113922 is an frugal number, since it uses more digits than its factorization.

218750113922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661440 (or 330721 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 218750113922 in words is "two hundred eighteen billion, seven hundred fifty million, one hundred thirteen thousand, nine hundred twenty-two".