13220201168 has 10 divisors (see below), whose sum is σ = 25614139794. Its totient is φ = 6610100576.

The previous prime is 13220201167. The next prime is 13220201173. The reversal of 13220201168 is 86110202231.

It can be written as a sum of positive squares in only one way, i.e., 7084925584 + 6135275584 = 84172^2 + 78328^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220201167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413131271 + ... + 413131302.

Almost surely, 2^13220201168 is an apocalyptic number.

It is an amenable number.

13220201168 is a deficient number, since it is larger than the sum of its proper divisors (12393938626).

13220201168 is an equidigital number, since it uses as much as digits as its factorization.

13220201168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826262581 (or 826262575 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 13220201168 its reverse (86110202231), we get a palindrome (99330403399).

The spelling of 13220201168 in words is "thirteen billion, two hundred twenty million, two hundred one thousand, one hundred sixty-eight".