11122021597 has 2 divisors, whose sum is σ = 11122021598. Its totient is φ = 11122021596.

The previous prime is 11122021531. The next prime is 11122021601. The reversal of 11122021597 is 79512022111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7703748441 + 3418273156 = 87771^2 + 58466^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11122021597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11122021997) 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, 5561010798 + 5561010799.

It is an arithmetic number, because the mean of its divisors is an integer number (5561010799).

Almost surely, 2^11122021597 is an apocalyptic number.

It is an amenable number.

11122021597 is a deficient number, since it is larger than the sum of its proper divisors (1).

11122021597 is an equidigital number, since it uses as much as digits as its factorization.

11122021597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 31.

The spelling of 11122021597 in words is "eleven billion, one hundred twenty-two million, twenty-one thousand, five hundred ninety-seven".