111102219979 has 4 divisors (see below), whose sum is σ = 111243392584. Its totient is φ = 110961047376.

The previous prime is 111102219931. The next prime is 111102220007. The reversal of 111102219979 is 979912201111.

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

It is a cyclic number.

It is not a de Polignac number, because 111102219979 - 2⁹ = 111102219467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111102219079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70585122 + ... + 70586695.

It is an arithmetic number, because the mean of its divisors is an integer number (27810848146).

Almost surely, 2^111102219979 is an apocalyptic number.

111102219979 is a deficient number, since it is larger than the sum of its proper divisors (141172605).

111102219979 is an equidigital number, since it uses as much as digits as its factorization.

111102219979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141172604.

The product of its (nonzero) digits is 20412, while the sum is 43.

The spelling of 111102219979 in words is "one hundred eleven billion, one hundred two million, two hundred nineteen thousand, nine hundred seventy-nine".