13101231064221 has 6 divisors (see below), whose sum is σ = 18924000426110. Its totient is φ = 8734154042808.

The previous prime is 13101231064193. The next prime is 13101231064253. The reversal of 13101231064221 is 12246013210131.

13101231064221 is a `hidden beast` number, since 1 + 3 + 1 + 0 + 1 + 2 + 3 + 10 + 642 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12443609002500 + 657622061721 = 3527550^2 + 810939^2 .

It is not a de Polignac number, because 13101231064221 - 2⁴² = 8703184553117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13101231064261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 727846170226 + ... + 727846170243.

Almost surely, 2^{13101231064221} is an apocalyptic number.

It is an amenable number.

13101231064221 is a deficient number, since it is larger than the sum of its proper divisors (5822769361889).

13101231064221 is a wasteful number, since it uses less digits than its factorization.

13101231064221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455692340475 (or 1455692340472 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 13101231064221 its reverse (12246013210131), we get a palindrome (25347244274352).

The spelling of 13101231064221 in words is "thirteen trillion, one hundred one billion, two hundred thirty-one million, sixty-four thousand, two hundred twenty-one".