13113322002 has 72 divisors (see below), whose sum is σ = 31991859900. Its totient is φ = 3876787200.

The previous prime is 13113321983. The next prime is 13113322007. The reversal of 13113322002 is 20022331131.

13113322002 is a `hidden beast` number, since 1 + 311 + 332 + 20 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9651294081 + 3462027921 = 98241^2 + 58839^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (13113322007) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15874 + ... + 162722.

Almost surely, 2^13113322002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13113322002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15995929950).

13113322002 is an abundant number, since it is smaller than the sum of its proper divisors (18878537898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13113322002 is a wasteful number, since it uses less digits than its factorization.

13113322002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146920 (or 146906 counting only the distinct ones).

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

Adding to 13113322002 its reverse (20022331131), we get a palindrome (33135653133).

The spelling of 13113322002 in words is "thirteen billion, one hundred thirteen million, three hundred twenty-two thousand, two".