11223557891213 has 2 divisors, whose sum is σ = 11223557891214. Its totient is φ = 11223557891212.

The previous prime is 11223557891197. The next prime is 11223557891297. The reversal of 11223557891213 is 31219875532211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9605517922729 + 1618039968484 = 3099277^2 + 1272022^2 .

It is a cyclic number.

It is not a de Polignac number, because 11223557891213 - 2⁴ = 11223557891197 is a prime.

It is a super-2 number, since 2×11223557891213² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11223557897213) 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, 5611778945606 + 5611778945607.

It is an arithmetic number, because the mean of its divisors is an integer number (5611778945607).

Almost surely, 2^{11223557891213} is an apocalyptic number.

It is an amenable number.

11223557891213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11223557891213 is an equidigital number, since it uses as much as digits as its factorization.

11223557891213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 50.

The spelling of 11223557891213 in words is "eleven trillion, two hundred twenty-three billion, five hundred fifty-seven million, eight hundred ninety-one thousand, two hundred thirteen".