222100000218 has 32 divisors (see below), whose sum is σ = 493651149120. Its totient is φ = 74018994480.

The previous prime is 222100000217. The next prime is 222100000237. The reversal of 222100000218 is 812000001222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 222100000218.

It is not an unprimeable number, because it can be changed into a prime (222100000217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115068 + ... + 676343.

It is an arithmetic number, because the mean of its divisors is an integer number (15426598410).

Almost surely, 2^222100000218 is an apocalyptic number.

222100000218 is an abundant number, since it is smaller than the sum of its proper divisors (271551148902).

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

222100000218 is a wasteful number, since it uses less digits than its factorization.

222100000218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796619 (or 796613 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The spelling of 222100000218 in words is "two hundred twenty-two billion, one hundred million, two hundred eighteen", and thus it is an aban number.