1122122211187 has 2 divisors, whose sum is σ = 1122122211188. Its totient is φ = 1122122211186.

The previous prime is 1122122211149. The next prime is 1122122211239. The reversal of 1122122211187 is 7811122212211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1122122211187 - 2³⁹ = 572366397299 is a prime.

It is not a weakly prime, because it can be changed into another prime (1122122211137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561061105593 + 561061105594.

It is an arithmetic number, because the mean of its divisors is an integer number (561061105594).

Almost surely, 2^{1122122211187} is an apocalyptic number.

1122122211187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122122211187 is an equidigital number, since it uses as much as digits as its factorization.

1122122211187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1792, while the sum is 31.

Adding to 1122122211187 its reverse (7811122212211), we get a palindrome (8933244423398).

The spelling of 1122122211187 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-two million, two hundred eleven thousand, one hundred eighty-seven".