111012201219979 has 2 divisors, whose sum is σ = 111012201219980. Its totient is φ = 111012201219978.

The previous prime is 111012201219971. The next prime is 111012201220001. The reversal of 111012201219979 is 979912102210111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111012201219979 - 2³ = 111012201219971 is a prime.

It is not a weakly prime, because it can be changed into another prime (111012201219971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55506100609989 + 55506100609990.

It is an arithmetic number, because the mean of its divisors is an integer number (55506100609990).

Almost surely, 2^{111012201219979} is an apocalyptic number.

111012201219979 is a deficient number, since it is larger than the sum of its proper divisors (1).

111012201219979 is an equidigital number, since it uses as much as digits as its factorization.

111012201219979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 46.

The spelling of 111012201219979 in words is "one hundred eleven trillion, twelve billion, two hundred one million, two hundred nineteen thousand, nine hundred seventy-nine".