111111099999998 has 32 divisors (see below), whose sum is σ = 196621817733120. Its totient is φ = 46082650870080.

The previous prime is 111111099999997. The next prime is 111111100000007. The reversal of 111111099999998 is 899999990111111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111099999997) 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, 75551090 + ... + 77007722.

It is an arithmetic number, because the mean of its divisors is an integer number (6144431804160).

Almost surely, 2^{111111099999998} is an apocalyptic number.

111111099999998 is a deficient number, since it is larger than the sum of its proper divisors (85510717733122).

111111099999998 is a wasteful number, since it uses less digits than its factorization.

111111099999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632432.

The product of its (nonzero) digits is 38263752, while the sum is 77.

The spelling of 111111099999998 in words is "one hundred eleven trillion, one hundred eleven billion, ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".