111220020198 has 48 divisors (see below), whose sum is σ = 275430014496. Its totient is φ = 31773911040.

The previous prime is 111220020137. The next prime is 111220020199. The reversal of 111220020198 is 891020022111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220020199) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1373478 + ... + 1452198.

It is an arithmetic number, because the mean of its divisors is an integer number (5738125302).

Almost surely, 2^111220020198 is an apocalyptic number.

111220020198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

111220020198 is an abundant number, since it is smaller than the sum of its proper divisors (164209994298).

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

111220020198 is a wasteful number, since it uses less digits than its factorization.

111220020198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89949 (or 89946 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The spelling of 111220020198 in words is "one hundred eleven billion, two hundred twenty million, twenty thousand, one hundred ninety-eight".