11123112997 has 2 divisors, whose sum is σ = 11123112998. Its totient is φ = 11123112996.

The previous prime is 11123112983. The next prime is 11123113033. The reversal of 11123112997 is 79921132111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6502648321 + 4620464676 = 80639^2 + 67974^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11123112997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11123112907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561556498 + 5561556499.

It is an arithmetic number, because the mean of its divisors is an integer number (5561556499).

Almost surely, 2^11123112997 is an apocalyptic number.

It is an amenable number.

11123112997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123112997 is an equidigital number, since it uses as much as digits as its factorization.

11123112997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 37.

The spelling of 11123112997 in words is "eleven billion, one hundred twenty-three million, one hundred twelve thousand, nine hundred ninety-seven".