111122021200198 has 4 divisors (see below), whose sum is σ = 166683031800300. Its totient is φ = 55561010600098.

The previous prime is 111122021200097. The next prime is 111122021200391. The reversal of 111122021200198 is 891002120221111.

It is a happy number.

It is a semiprime because it is the product of two primes.

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, 27780505300048 + ... + 27780505300051.

It is an arithmetic number, because the mean of its divisors is an integer number (41670757950075).

Almost surely, 2^{111122021200198} is an apocalyptic number.

111122021200198 is a deficient number, since it is larger than the sum of its proper divisors (55561010600102).

111122021200198 is an equidigital number, since it uses as much as digits as its factorization.

111122021200198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55561010600101.

The product of its (nonzero) digits is 1152, while the sum is 31.

The spelling of 111122021200198 in words is "one hundred eleven trillion, one hundred twenty-two billion, twenty-one million, two hundred thousand, one hundred ninety-eight".