13011123112 has 32 divisors (see below), whose sum is σ = 26982534600. Its totient is φ = 5842831104.

The previous prime is 13011123071. The next prime is 13011123143. The reversal of 13011123112 is 21132111031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13011052356 + 70756 = 114066^2 + 266^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1686787 + ... + 1694482.

Almost surely, 2^13011123112 is an apocalyptic number.

It is an amenable number.

13011123112 is an abundant number, since it is smaller than the sum of its proper divisors (13971411488).

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

13011123112 is a wasteful number, since it uses less digits than its factorization.

13011123112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381325 (or 3381321 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13011123112 its reverse (21132111031), we get a palindrome (34143234143).

The spelling of 13011123112 in words is "thirteen billion, eleven million, one hundred twenty-three thousand, one hundred twelve".