1158811116121 has 4 divisors (see below), whose sum is σ = 1164303112144. Its totient is φ = 1153319120100.

The previous prime is 1158811116103. The next prime is 1158811116149. The reversal of 1158811116121 is 1216111188511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1158811116121 - 2¹¹ = 1158811114073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1158811116181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2745997695 + ... + 2745998116.

It is an arithmetic number, because the mean of its divisors is an integer number (291075778036).

Almost surely, 2^{1158811116121} is an apocalyptic number.

It is an amenable number.

1158811116121 is a deficient number, since it is larger than the sum of its proper divisors (5491996023).

1158811116121 is an equidigital number, since it uses as much as digits as its factorization.

1158811116121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5491996022.

The product of its digits is 3840, while the sum is 37.

The spelling of 1158811116121 in words is "one trillion, one hundred fifty-eight billion, eight hundred eleven million, one hundred sixteen thousand, one hundred twenty-one".