111132019979 has 4 divisors (see below), whose sum is σ = 111141075480. Its totient is φ = 111122964480.

The previous prime is 111132019969. The next prime is 111132019987. The reversal of 111132019979 is 979910231111.

It is a happy number.

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 111132019979 - 2²⁸ = 110863584523 is a prime.

It is a super-2 number, since 2×111132019979² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111132019969) 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, 4509317 + ... + 4533894.

It is an arithmetic number, because the mean of its divisors is an integer number (27785268870).

Almost surely, 2^111132019979 is an apocalyptic number.

111132019979 is a deficient number, since it is larger than the sum of its proper divisors (9055501).

111132019979 is an equidigital number, since it uses as much as digits as its factorization.

111132019979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9055500.

The product of its (nonzero) digits is 30618, while the sum is 44.

The spelling of 111132019979 in words is "one hundred eleven billion, one hundred thirty-two million, nineteen thousand, nine hundred seventy-nine".