13113102123221 has 2 divisors, whose sum is σ = 13113102123222. Its totient is φ = 13113102123220.

The previous prime is 13113102123211. The next prime is 13113102123227. The reversal of 13113102123221 is 12232120131131.

It is a happy number.

13113102123221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7114942738225 + 5998159384996 = 2667385^2 + 2449114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13113102123221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13113102123227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6556551061610 + 6556551061611.

It is an arithmetic number, because the mean of its divisors is an integer number (6556551061611).

Almost surely, 2^{13113102123221} is an apocalyptic number.

It is an amenable number.

13113102123221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13113102123221 is an equidigital number, since it uses as much as digits as its factorization.

13113102123221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 13113102123221 its reverse (12232120131131), we get a palindrome (25345222254352).

The spelling of 13113102123221 in words is "thirteen trillion, one hundred thirteen billion, one hundred two million, one hundred twenty-three thousand, two hundred twenty-one".