1121911159 has 2 divisors, whose sum is σ = 1121911160. Its totient is φ = 1121911158.

The previous prime is 1121911129. The next prime is 1121911199. The reversal of 1121911159 is 9511191211.

It is a weak prime.

It is an emirp because it is prime and its reverse (9511191211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121911159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121911159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121911129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560955579 + 560955580.

It is an arithmetic number, because the mean of its divisors is an integer number (560955580).

Almost surely, 2^1121911159 is an apocalyptic number.

1121911159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121911159 is an equidigital number, since it uses as much as digits as its factorization.

1121911159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 31.

The square root of 1121911159 is about 33494.9422898443. The cubic root of 1121911159 is about 1039.0891800498.

The spelling of 1121911159 in words is "one billion, one hundred twenty-one million, nine hundred eleven thousand, one hundred fifty-nine".