111099999999979 has 2 divisors, whose sum is σ = 111099999999980. Its totient is φ = 111099999999978.

The previous prime is 111099999999977. The next prime is 111100000000037. The reversal of 111099999999979 is 979999999990111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111099999999979 - 2¹ = 111099999999977 is a prime.

It is a super-3 number, since 3×111099999999979³ (a number of 43 digits) contains 333 as substring.

Together with 111099999999977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111099999999977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55549999999989 + 55549999999990.

It is an arithmetic number, because the mean of its divisors is an integer number (55549999999990).

Almost surely, 2^{111099999999979} is an apocalyptic number.

111099999999979 is a deficient number, since it is larger than the sum of its proper divisors (1).

111099999999979 is an equidigital number, since it uses as much as digits as its factorization.

111099999999979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24407490807, while the sum is 100.

The spelling of 111099999999979 in words is "one hundred eleven trillion, ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seventy-nine".