111222222198 has 32 divisors (see below), whose sum is σ = 226354917120. Its totient is φ = 36423747360.

The previous prime is 111222222197. The next prime is 111222222217. The reversal of 111222222198 is 891222222111.

It is a super-2 number, since 2×111222222198² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222222191) 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, 137511 + ... + 491277.

It is an arithmetic number, because the mean of its divisors is an integer number (7073591160).

Almost surely, 2^111222222198 is an apocalyptic number.

111222222198 is an abundant number, since it is smaller than the sum of its proper divisors (115132694922).

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

111222222198 is a wasteful number, since it uses less digits than its factorization.

111222222198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354692.

The product of its digits is 4608, while the sum is 33.

The spelling of 111222222198 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred ninety-eight".