13123226120 has 64 divisors (see below), whose sum is σ = 30182019120. Its totient is φ = 5133533184.

The previous prime is 13123226093. The next prime is 13123226159. The reversal of 13123226120 is 2162232131.

It can be written as a sum of positive squares in 8 ways, for example, as 2578811524 + 10544414596 = 50782^2 + 102686^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 653672 + ... + 673448.

Almost surely, 2^13123226120 is an apocalyptic number.

13123226120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13123226120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15091009560).

13123226120 is an abundant number, since it is smaller than the sum of its proper divisors (17058793000).

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

13123226120 is a wasteful number, since it uses less digits than its factorization.

13123226120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20154 (or 20150 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 13123226120 its reverse (2162232131), we get a palindrome (15285458251).

The spelling of 13123226120 in words is "thirteen billion, one hundred twenty-three million, two hundred twenty-six thousand, one hundred twenty".