111982198 has 4 divisors (see below), whose sum is σ = 167973300. Its totient is φ = 55991098.

The previous prime is 111982183. The next prime is 111982201. The reversal of 111982198 is 891289111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 891289111 = 5297 ⋅168263.

It is a super-2 number, since 2×111982198² = 25080025337822408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111982198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27995548 + ... + 27995551.

It is an arithmetic number, because the mean of its divisors is an integer number (41993325).

Almost surely, 2^111982198 is an apocalyptic number.

111982198 is a deficient number, since it is larger than the sum of its proper divisors (55991102).

111982198 is an equidigital number, since it uses as much as digits as its factorization.

111982198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55991101.

The product of its digits is 10368, while the sum is 40.

The square root of 111982198 is about 10582.1641453911. The cubic root of 111982198 is about 482.0029125815.

The spelling of 111982198 in words is "one hundred eleven million, nine hundred eighty-two thousand, one hundred ninety-eight".