12013453120 has 28 divisors (see below), whose sum is σ = 28607036004. Its totient is φ = 4805381120.

The previous prime is 12013453099. The next prime is 12013453139. The reversal of 12013453120 is 2135431021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4999055616 + 7014397504 = 70704^2 + 83752^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12013453091 and 12013453100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18770701 + ... + 18771340.

Almost surely, 2^12013453120 is an apocalyptic number.

12013453120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12013453120 is an abundant number, since it is smaller than the sum of its proper divisors (16593582884).

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

12013453120 is an equidigital number, since it uses as much as digits as its factorization.

12013453120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37542058 (or 37542048 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 12013453120 its reverse (2135431021), we get a palindrome (14148884141).

The spelling of 12013453120 in words is "twelve billion, thirteen million, four hundred fifty-three thousand, one hundred twenty".