12013221330 has 96 divisors (see below), whose sum is σ = 34200361728. Its totient is φ = 2901484800.

The previous prime is 12013221301. The next prime is 12013221331. The reversal of 12013221330 is 3312231021.

12013221330 is a `hidden beast` number, since 12 + 0 + 1 + 322 + 1 + 330 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12013221331) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245902 + ... + 290678.

It is an arithmetic number, because the mean of its divisors is an integer number (356253768).

Almost surely, 2^12013221330 is an apocalyptic number.

12013221330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12013221330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17100180864).

12013221330 is an abundant number, since it is smaller than the sum of its proper divisors (22187140398).

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

12013221330 is a wasteful number, since it uses less digits than its factorization.

12013221330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45072 (or 45069 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12013221330 its reverse (3312231021), we get a palindrome (15325452351).

The spelling of 12013221330 in words is "twelve billion, thirteen million, two hundred twenty-one thousand, three hundred thirty".