991112119 has 2 divisors, whose sum is σ = 991112120. Its totient is φ = 991112118.

The previous prime is 991112107. The next prime is 991112123. The reversal of 991112119 is 911211199.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-991112119 is a prime.

It is a super-2 number, since 2×991112119² = 1964606464857340322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (991182119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495556059 + 495556060.

It is an arithmetic number, because the mean of its divisors is an integer number (495556060).

Almost surely, 2^991112119 is an apocalyptic number.

991112119 is a deficient number, since it is larger than the sum of its proper divisors (1).

991112119 is an equidigital number, since it uses as much as digits as its factorization.

991112119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458, while the sum is 34.

The square root of 991112119 is about 31481.9332157350. The cubic root of 991112119 is about 997.0285522437.

The spelling of 991112119 in words is "nine hundred ninety-one million, one hundred twelve thousand, one hundred nineteen".