1230112110991 has 2 divisors, whose sum is σ = 1230112110992. Its totient is φ = 1230112110990.

The previous prime is 1230112110989. The next prime is 1230112111037. The reversal of 1230112110991 is 1990112110321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1230112110991 - 2¹ = 1230112110989 is a prime.

Together with 1230112110989, 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 (1230112110791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615056055495 + 615056055496.

It is an arithmetic number, because the mean of its divisors is an integer number (615056055496).

Almost surely, 2^{1230112110991} is an apocalyptic number.

1230112110991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230112110991 is an equidigital number, since it uses as much as digits as its factorization.

1230112110991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 31.

The spelling of 1230112110991 in words is "one trillion, two hundred thirty billion, one hundred twelve million, one hundred ten thousand, nine hundred ninety-one".