111021112120979 has 2 divisors, whose sum is σ = 111021112120980. Its totient is φ = 111021112120978.

The previous prime is 111021112120967. The next prime is 111021112121027. The reversal of 111021112120979 is 979021211120111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111021112120979 is a prime.

It is not a weakly prime, because it can be changed into another prime (111021112120949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510556060489 + 55510556060490.

It is an arithmetic number, because the mean of its divisors is an integer number (55510556060490).

Almost surely, 2^{111021112120979} is an apocalyptic number.

111021112120979 is a deficient number, since it is larger than the sum of its proper divisors (1).

111021112120979 is an equidigital number, since it uses as much as digits as its factorization.

111021112120979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 38.

The spelling of 111021112120979 in words is "one hundred eleven trillion, twenty-one billion, one hundred twelve million, one hundred twenty thousand, nine hundred seventy-nine".