11285911021369 has 2 divisors, whose sum is σ = 11285911021370. Its totient is φ = 11285911021368.

The previous prime is 11285911021321. The next prime is 11285911021373. The reversal of 11285911021369 is 96312011958211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6611645401344 + 4674265620025 = 2571312^2 + 2162005^2 .

It is a cyclic number.

It is not a de Polignac number, because 11285911021369 - 2²⁵ = 11285877466937 is a prime.

It is a super-2 number, since 2×11285911021369² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11285911021069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5642955510684 + 5642955510685.

It is an arithmetic number, because the mean of its divisors is an integer number (5642955510685).

Almost surely, 2^{11285911021369} is an apocalyptic number.

It is an amenable number.

11285911021369 is a deficient number, since it is larger than the sum of its proper divisors (1).

11285911021369 is an equidigital number, since it uses as much as digits as its factorization.

11285911021369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 49.

The spelling of 11285911021369 in words is "eleven trillion, two hundred eighty-five billion, nine hundred eleven million, twenty-one thousand, three hundred sixty-nine".