1123422111209 has 2 divisors, whose sum is σ = 1123422111210. Its totient is φ = 1123422111208.

The previous prime is 1123422111193. The next prime is 1123422111223. The reversal of 1123422111209 is 9021112243211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 610117210000 + 513304901209 = 781100^2 + 716453^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123422111209 - 2⁴ = 1123422111193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123422111709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561711055604 + 561711055605.

It is an arithmetic number, because the mean of its divisors is an integer number (561711055605).

Almost surely, 2^{1123422111209} is an apocalyptic number.

It is an amenable number.

1123422111209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123422111209 is an equidigital number, since it uses as much as digits as its factorization.

1123422111209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 1123422111209 in words is "one trillion, one hundred twenty-three billion, four hundred twenty-two million, one hundred eleven thousand, two hundred nine".