112121110020391 has 2 divisors, whose sum is σ = 112121110020392. Its totient is φ = 112121110020390.

The previous prime is 112121110020209. The next prime is 112121110020407. The reversal of 112121110020391 is 193020011121211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 112121110020391 - 2³¹ = 112118962536743 is a prime.

It is a super-2 number, since 2×112121110020391² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112121180020391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56060555010195 + 56060555010196.

It is an arithmetic number, because the mean of its divisors is an integer number (56060555010196).

Almost surely, 2^{112121110020391} is an apocalyptic number.

112121110020391 is a deficient number, since it is larger than the sum of its proper divisors (1).

112121110020391 is an equidigital number, since it uses as much as digits as its factorization.

112121110020391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 25.

The spelling of 112121110020391 in words is "one hundred twelve trillion, one hundred twenty-one billion, one hundred ten million, twenty thousand, three hundred ninety-one".