222518147908 has 48 divisors (see below), whose sum is σ = 457011587200. Its totient is φ = 94757408928.

The previous prime is 222518147869. The next prime is 222518147921. The reversal of 222518147908 is 809741815222.

It is a happy number.

It is a super-2 number, since 2×222518147908² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301110 + ... + 731917.

Almost surely, 2^222518147908 is an apocalyptic number.

222518147908 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

222518147908 is an abundant number, since it is smaller than the sum of its proper divisors (234493439292).

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

222518147908 is a wasteful number, since it uses less digits than its factorization.

222518147908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033209 (or 1033193 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 222518147908 in words is "two hundred twenty-two billion, five hundred eighteen million, one hundred forty-seven thousand, nine hundred eight".