1122123911 has 2 divisors, whose sum is σ = 1122123912. Its totient is φ = 1122123910.

The previous prime is 1122123859. The next prime is 1122123929. The reversal of 1122123911 is 1193212211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1122123911 - 2²² = 1117929607 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122123991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561061955 + 561061956.

It is an arithmetic number, because the mean of its divisors is an integer number (561061956).

Almost surely, 2^1122123911 is an apocalyptic number.

1122123911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122123911 is an equidigital number, since it uses as much as digits as its factorization.

1122123911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 23.

The square root of 1122123911 is about 33498.1180217636. The cubic root of 1122123911 is about 1039.1548579563.

The spelling of 1122123911 in words is "one billion, one hundred twenty-two million, one hundred twenty-three thousand, nine hundred eleven".