1188112122865 has 32 divisors (see below), whose sum is σ = 1447899328512. Its totient is φ = 935832960000.

The previous prime is 1188112122859. The next prime is 1188112122887. The reversal of 1188112122865 is 5682212118811.

It is not a de Polignac number, because 1188112122865 - 2¹⁷ = 1188111991793 is a prime.

It is a super-2 number, since 2×1188112122865² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67996080 + ... + 68013550.

It is an arithmetic number, because the mean of its divisors is an integer number (45246854016).

Almost surely, 2^{1188112122865} is an apocalyptic number.

It is an amenable number.

1188112122865 is a deficient number, since it is larger than the sum of its proper divisors (259787205647).

1188112122865 is a wasteful number, since it uses less digits than its factorization.

1188112122865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18321.

The product of its digits is 122880, while the sum is 46.

The spelling of 1188112122865 in words is "one trillion, one hundred eighty-eight billion, one hundred twelve million, one hundred twenty-two thousand, eight hundred sixty-five".