1116256121 has 2 divisors, whose sum is σ = 1116256122. Its totient is φ = 1116256120.

The previous prime is 1116256051. The next prime is 1116256129. The reversal of 1116256121 is 1216526111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1041675625 + 74580496 = 32275^2 + 8636^2 .

It is a cyclic number.

It is not a de Polignac number, because 1116256121 - 2¹⁰ = 1116255097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1116256129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558128060 + 558128061.

It is an arithmetic number, because the mean of its divisors is an integer number (558128061).

Almost surely, 2^1116256121 is an apocalyptic number.

It is an amenable number.

1116256121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116256121 is an equidigital number, since it uses as much as digits as its factorization.

1116256121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 26.

The square root of 1116256121 is about 33410.4193478621. The cubic root of 1116256121 is about 1037.3403816182.

The spelling of 1116256121 in words is "one billion, one hundred sixteen million, two hundred fifty-six thousand, one hundred twenty-one".