1110112101991 has 2 divisors, whose sum is σ = 1110112101992. Its totient is φ = 1110112101990.

The previous prime is 1110112101979. The next prime is 1110112102037. The reversal of 1110112101991 is 1991012110111.

It is a weak prime.

It is an emirp because it is prime and its reverse (1991012110111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1110112101991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1110112101961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555056050995 + 555056050996.

It is an arithmetic number, because the mean of its divisors is an integer number (555056050996).

Almost surely, 2^{1110112101991} is an apocalyptic number.

1110112101991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110112101991 is an equidigital number, since it uses as much as digits as its factorization.

1110112101991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 28.

The spelling of 1110112101991 in words is "one trillion, one hundred ten billion, one hundred twelve million, one hundred one thousand, nine hundred ninety-one".