13220102312 has 8 divisors (see below), whose sum is σ = 24787691850. Its totient is φ = 6610051152.

The previous prime is 13220102297. The next prime is 13220102317. The reversal of 13220102312 is 21320102231.

It can be written as a sum of positive squares in only one way, i.e., 7851023236 + 5369079076 = 88606^2 + 73274^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×13220102312² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13220102317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826256387 + ... + 826256402.

Almost surely, 2^13220102312 is an apocalyptic number.

It is an amenable number.

13220102312 is a deficient number, since it is larger than the sum of its proper divisors (11567589538).

13220102312 is a wasteful number, since it uses less digits than its factorization.

13220102312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652512795 (or 1652512791 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13220102312 its reverse (21320102231), we get a palindrome (34540204543).

The spelling of 13220102312 in words is "thirteen billion, two hundred twenty million, one hundred two thousand, three hundred twelve".