1121915087 has 2 divisors, whose sum is σ = 1121915088. Its totient is φ = 1121915086.

The previous prime is 1121915023. The next prime is 1121915089. The reversal of 1121915087 is 7805191211.

It is a strong prime.

It is an emirp because it is prime and its reverse (7805191211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121915087 - 2⁶ = 1121915023 is a prime.

Together with 1121915089, 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 (1121915089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560957543 + 560957544.

It is an arithmetic number, because the mean of its divisors is an integer number (560957544).

Almost surely, 2^1121915087 is an apocalyptic number.

1121915087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121915087 is an equidigital number, since it uses as much as digits as its factorization.

1121915087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 35.

The square root of 1121915087 is about 33495.0009255113. Note that the first 3 decimals coincide. The cubic root of 1121915087 is about 1039.0903927238.

The spelling of 1121915087 in words is "one billion, one hundred twenty-one million, nine hundred fifteen thousand, eighty-seven".