13023112016221 has 2 divisors, whose sum is σ = 13023112016222. Its totient is φ = 13023112016220.

The previous prime is 13023112016171. The next prime is 13023112016267. The reversal of 13023112016221 is 12261021132031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9957268604196 + 3065843412025 = 3155514^2 + 1750955^2 .

It is a cyclic number.

It is not a de Polignac number, because 13023112016221 - 2⁹ = 13023112015709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13023112016281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6511556008110 + 6511556008111.

It is an arithmetic number, because the mean of its divisors is an integer number (6511556008111).

Almost surely, 2^{13023112016221} is an apocalyptic number.

It is an amenable number.

13023112016221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13023112016221 is an equidigital number, since it uses as much as digits as its factorization.

13023112016221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 13023112016221 its reverse (12261021132031), we get a palindrome (25284133148252).

The spelling of 13023112016221 in words is "thirteen trillion, twenty-three billion, one hundred twelve million, sixteen thousand, two hundred twenty-one".