201112111979 has 2 divisors, whose sum is σ = 201112111980. Its totient is φ = 201112111978.

The previous prime is 201112111957. The next prime is 201112112011. The reversal of 201112111979 is 979111211102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201112111979 - 2²⁰ = 201111063403 is a prime.

It is not a weakly prime, because it can be changed into another prime (201112111909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100556055989 + 100556055990.

It is an arithmetic number, because the mean of its divisors is an integer number (100556055990).

Almost surely, 2^201112111979 is an apocalyptic number.

201112111979 is a deficient number, since it is larger than the sum of its proper divisors (1).

201112111979 is an equidigital number, since it uses as much as digits as its factorization.

201112111979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 35.

The spelling of 201112111979 in words is "two hundred one billion, one hundred twelve million, one hundred eleven thousand, nine hundred seventy-nine".