1130121191 has 2 divisors, whose sum is σ = 1130121192. Its totient is φ = 1130121190.

The previous prime is 1130121133. The next prime is 1130121193. The reversal of 1130121191 is 1911210311.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1130121191 is a prime.

Together with 1130121193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1130121193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565060595 + 565060596.

It is an arithmetic number, because the mean of its divisors is an integer number (565060596).

Almost surely, 2^1130121191 is an apocalyptic number.

1130121191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1130121191 is an equidigital number, since it uses as much as digits as its factorization.

1130121191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 20.

The square root of 1130121191 is about 33617.2751870225. The cubic root of 1130121191 is about 1041.6176720152.

The spelling of 1130121191 in words is "one billion, one hundred thirty million, one hundred twenty-one thousand, one hundred ninety-one".