1222122211187 has 2 divisors, whose sum is σ = 1222122211188. Its totient is φ = 1222122211186.

The previous prime is 1222122211133. The next prime is 1222122211207. The reversal of 1222122211187 is 7811122212221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222122211187 - 2¹² = 1222122207091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222122211117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611061105593 + 611061105594.

It is an arithmetic number, because the mean of its divisors is an integer number (611061105594).

Almost surely, 2^{1222122211187} is an apocalyptic number.

1222122211187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222122211187 is an equidigital number, since it uses as much as digits as its factorization.

1222122211187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3584, while the sum is 32.

The spelling of 1222122211187 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred eleven thousand, one hundred eighty-seven".