112012202121991 has 2 divisors, whose sum is σ = 112012202121992. Its totient is φ = 112012202121990.

The previous prime is 112012202121971. The next prime is 112012202122049. The reversal of 112012202121991 is 199121202210211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 112012202121991 - 2¹⁵ = 112012202089223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112012202121971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56006101060995 + 56006101060996.

It is an arithmetic number, because the mean of its divisors is an integer number (56006101060996).

Almost surely, 2^{112012202121991} is an apocalyptic number.

112012202121991 is a deficient number, since it is larger than the sum of its proper divisors (1).

112012202121991 is an equidigital number, since it uses as much as digits as its factorization.

112012202121991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 34.

The spelling of 112012202121991 in words is "one hundred twelve trillion, twelve billion, two hundred two million, one hundred twenty-one thousand, nine hundred ninety-one".