222248445218 has 18 divisors (see below), whose sum is σ = 354154424211. Its totient is φ = 104582169984.

The previous prime is 222248445203. The next prime is 222248445241. The reversal of 222248445218 is 812544842222.

It can be written as a sum of positive squares in 5 ways, for example, as 208367599729 + 13880845489 = 456473^2 + 117817^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=333353.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11324198 + ... + 11343806.

Almost surely, 2^222248445218 is an apocalyptic number.

222248445218 is a deficient number, since it is larger than the sum of its proper divisors (131905978993).

222248445218 is an frugal number, since it uses more digits than its factorization.

222248445218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39254 (or 19628 counting only the distinct ones).

The product of its digits is 655360, while the sum is 44.

The spelling of 222248445218 in words is "two hundred twenty-two billion, two hundred forty-eight million, four hundred forty-five thousand, two hundred eighteen".