11396766866021 has 2 divisors, whose sum is σ = 11396766866022. Its totient is φ = 11396766866020.

The previous prime is 11396766866003. The next prime is 11396766866039. The reversal of 11396766866021 is 12066866769311.

11396766866021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (11396766866003) and next prime (11396766866039).

It can be written as a sum of positive squares in only one way, i.e., 11111355556900 + 285411309121 = 3333370^2 + 534239^2 .

It is a cyclic number.

It is not a de Polignac number, because 11396766866021 - 2²² = 11396762671717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11396766866621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5698383433010 + 5698383433011.

It is an arithmetic number, because the mean of its divisors is an integer number (5698383433011).

Almost surely, 2^{11396766866021} is an apocalyptic number.

It is an amenable number.

11396766866021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11396766866021 is an equidigital number, since it uses as much as digits as its factorization.

11396766866021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23514624, while the sum is 62.

The spelling of 11396766866021 in words is "eleven trillion, three hundred ninety-six billion, seven hundred sixty-six million, eight hundred sixty-six thousand, twenty-one".