21162233366611 has 2 divisors, whose sum is σ = 21162233366612. Its totient is φ = 21162233366610.

The previous prime is 21162233366579. The next prime is 21162233366627. The reversal of 21162233366611 is 11666333226112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21162233366611 - 2⁵ = 21162233366579 is a prime.

It is not a weakly prime, because it can be changed into another prime (21162233366111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10581116683305 + 10581116683306.

It is an arithmetic number, because the mean of its divisors is an integer number (10581116683306).

Almost surely, 2^{21162233366611} is an apocalyptic number.

21162233366611 is a deficient number, since it is larger than the sum of its proper divisors (1).

21162233366611 is an equidigital number, since it uses as much as digits as its factorization.

21162233366611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 43.

The spelling of 21162233366611 in words is "twenty-one trillion, one hundred sixty-two billion, two hundred thirty-three million, three hundred sixty-six thousand, six hundred eleven".