1155222135187 has 2 divisors, whose sum is σ = 1155222135188. Its totient is φ = 1155222135186.

The previous prime is 1155222135113. The next prime is 1155222135283. The reversal of 1155222135187 is 7815312225511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1155222135187 - 2¹¹ = 1155222133139 is a prime.

It is a super-2 number, since 2×1155222135187² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1155222135887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577611067593 + 577611067594.

It is an arithmetic number, because the mean of its divisors is an integer number (577611067594).

Almost surely, 2^{1155222135187} is an apocalyptic number.

1155222135187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155222135187 is an equidigital number, since it uses as much as digits as its factorization.

1155222135187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168000, while the sum is 43.

The spelling of 1155222135187 in words is "one trillion, one hundred fifty-five billion, two hundred twenty-two million, one hundred thirty-five thousand, one hundred eighty-seven".