12013121130 has 32 divisors (see below), whose sum is σ = 29501993664. Its totient is φ = 3128998656.

The previous prime is 12013121129. The next prime is 12013121137. The reversal of 12013121130 is 3112131021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (12013121137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4654959 + ... + 4657538.

It is an arithmetic number, because the mean of its divisors is an integer number (921937302).

Almost surely, 2^12013121130 is an apocalyptic number.

12013121130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12013121130 is an abundant number, since it is smaller than the sum of its proper divisors (17488872534).

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

12013121130 is a wasteful number, since it uses less digits than its factorization.

12013121130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9312550.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12013121130 its reverse (3112131021), we get a palindrome (15125252151).

The spelling of 12013121130 in words is "twelve billion, thirteen million, one hundred twenty-one thousand, one hundred thirty".