112122201991 has 2 divisors, whose sum is σ = 112122201992. Its totient is φ = 112122201990.

The previous prime is 112122201943. The next prime is 112122202009. The reversal of 112122201991 is 199102221211.

It is a strong prime.

It is an emirp because it is prime and its reverse (199102221211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112122201991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112122201091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56061100995 + 56061100996.

It is an arithmetic number, because the mean of its divisors is an integer number (56061100996).

Almost surely, 2^112122201991 is an apocalyptic number.

112122201991 is a deficient number, since it is larger than the sum of its proper divisors (1).

112122201991 is an equidigital number, since it uses as much as digits as its factorization.

112122201991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 112122201991 in words is "one hundred twelve billion, one hundred twenty-two million, two hundred one thousand, nine hundred ninety-one".