13123433220 has 96 divisors (see below), whose sum is σ = 40248835200. Its totient is φ = 3180140544.

The previous prime is 13123433207. The next prime is 13123433251. The reversal of 13123433220 is 2233432131.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192250 + ... + 251409.

It is an arithmetic number, because the mean of its divisors is an integer number (419258700).

Almost surely, 2^13123433220 is an apocalyptic number.

13123433220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13123433220 is an abundant number, since it is smaller than the sum of its proper divisors (27125401980).

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

13123433220 is a wasteful number, since it uses less digits than its factorization.

13123433220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443717 (or 443715 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 13123433220 its reverse (2233432131), we get a palindrome (15356865351).

The spelling of 13123433220 in words is "thirteen billion, one hundred twenty-three million, four hundred thirty-three thousand, two hundred twenty".