111221000198 has 64 divisors (see below), whose sum is σ = 211975833600. Its totient is φ = 42511098240.

The previous prime is 111221000197. The next prime is 111221000237. The reversal of 111221000198 is 891000122111.

It is a super-2 number, since 2×111221000198² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221000197) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1880948 + ... + 1939176.

It is an arithmetic number, because the mean of its divisors is an integer number (3312122400).

Almost surely, 2^111221000198 is an apocalyptic number.

111221000198 is a deficient number, since it is larger than the sum of its proper divisors (100754833402).

111221000198 is a wasteful number, since it uses less digits than its factorization.

111221000198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58485.

The product of its (nonzero) digits is 288, while the sum is 26.

The spelling of 111221000198 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred ninety-eight", and thus it is an aban number.