11525423221321 has 2 divisors, whose sum is σ = 11525423221322. Its totient is φ = 11525423221320.

The previous prime is 11525423221307. The next prime is 11525423221369. The reversal of 11525423221321 is 12312232452511.

11525423221321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10113901015696 + 1411522205625 = 3180236^2 + 1188075^2 .

It is a cyclic number.

It is not a de Polignac number, because 11525423221321 - 2⁹ = 11525423220809 is a prime.

It is not a weakly prime, because it can be changed into another prime (11525423221421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5762711610660 + 5762711610661.

It is an arithmetic number, because the mean of its divisors is an integer number (5762711610661).

Almost surely, 2^{11525423221321} is an apocalyptic number.

It is an amenable number.

11525423221321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11525423221321 is an equidigital number, since it uses as much as digits as its factorization.

11525423221321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 34.

Adding to 11525423221321 its reverse (12312232452511), we get a palindrome (23837655673832).

The spelling of 11525423221321 in words is "eleven trillion, five hundred twenty-five billion, four hundred twenty-three million, two hundred twenty-one thousand, three hundred twenty-one".