12013322013 has 54 divisors (see below), whose sum is σ = 22187631102. Its totient is φ = 6240659040.

The previous prime is 12013322011. The next prime is 12013322039. The reversal of 12013322013 is 31022331021.

It can be written as a sum of positive squares in only one way, i.e., 6096174084 + 5917147929 = 78078^2 + 76923^2 .

It is not a de Polignac number, because 12013322013 - 2¹ = 12013322011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013322011) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 59206 + ... + 165927.

Almost surely, 2^12013322013 is an apocalyptic number.

It is an amenable number.

12013322013 is a deficient number, since it is larger than the sum of its proper divisors (10174309089).

12013322013 is a wasteful number, since it uses less digits than its factorization.

12013322013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225175 (or 225154 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12013322013 its reverse (31022331021), we get a palindrome (43035653034).

The spelling of 12013322013 in words is "twelve billion, thirteen million, three hundred twenty-two thousand, thirteen".