112121591 has 2 divisors, whose sum is σ = 112121592. Its totient is φ = 112121590.

The previous prime is 112121557. The next prime is 112121609. The reversal of 112121591 is 195121211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112121591 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112121521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56060795 + 56060796.

It is an arithmetic number, because the mean of its divisors is an integer number (56060796).

Almost surely, 2^112121591 is an apocalyptic number.

112121591 is a deficient number, since it is larger than the sum of its proper divisors (1).

112121591 is an equidigital number, since it uses as much as digits as its factorization.

112121591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180, while the sum is 23.

The square root of 112121591 is about 10588.7483207412. The cubic root of 112121591 is about 482.2028252297.

The spelling of 112121591 in words is "one hundred twelve million, one hundred twenty-one thousand, five hundred ninety-one".