112010102001991 has 2 divisors, whose sum is σ = 112010102001992. Its totient is φ = 112010102001990.

The previous prime is 112010102001989. The next prime is 112010102002087. The reversal of 112010102001991 is 199100201010211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 112010102001991 - 2¹ = 112010102001989 is a prime.

It is a super-3 number, since 3×112010102001991³ (a number of 43 digits) contains 333 as substring.

Together with 112010102001989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112010102001971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56005051000995 + 56005051000996.

It is an arithmetic number, because the mean of its divisors is an integer number (56005051000996).

Almost surely, 2^{112010102001991} is an apocalyptic number.

112010102001991 is a deficient number, since it is larger than the sum of its proper divisors (1).

112010102001991 is an equidigital number, since it uses as much as digits as its factorization.

112010102001991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 28.

The spelling of 112010102001991 in words is "one hundred twelve trillion, ten billion, one hundred two million, one thousand, nine hundred ninety-one".