1112121101591 has 2 divisors, whose sum is σ = 1112121101592. Its totient is φ = 1112121101590.

The previous prime is 1112121101563. The next prime is 1112121101711. The reversal of 1112121101591 is 1951011212111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1112121101591 - 2¹⁸ = 1112120839447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1112121101591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112121121591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556060550795 + 556060550796.

It is an arithmetic number, because the mean of its divisors is an integer number (556060550796).

Almost surely, 2^{1112121101591} is an apocalyptic number.

1112121101591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112121101591 is an equidigital number, since it uses as much as digits as its factorization.

1112121101591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 26.

The spelling of 1112121101591 in words is "one trillion, one hundred twelve billion, one hundred twenty-one million, one hundred one thousand, five hundred ninety-one".