11221226035897 has 2 divisors, whose sum is σ = 11221226035898. Its totient is φ = 11221226035896.

The previous prime is 11221226035871. The next prime is 11221226035909. The reversal of 11221226035897 is 79853062212211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10712195156601 + 509030879296 = 3272949^2 + 713464^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11221226035897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11221226035897.

It is not a weakly prime, because it can be changed into another prime (11221226035807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610613017948 + 5610613017949.

It is an arithmetic number, because the mean of its divisors is an integer number (5610613017949).

Almost surely, 2^{11221226035897} is an apocalyptic number.

It is an amenable number.

11221226035897 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221226035897 is an equidigital number, since it uses as much as digits as its factorization.

11221226035897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 11221226035897 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty-six million, thirty-five thousand, eight hundred ninety-seven".