12013221032 has 16 divisors (see below), whose sum is σ = 22654993140. Its totient is φ = 5971889536.

The previous prime is 12013220963. The next prime is 12013221041. The reversal of 12013221032 is 23012231021.

It can be written as a sum of positive squares in 2 ways, for example, as 11891030116 + 122190916 = 109046^2 + 11054^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12013221032.

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, 4338653 + ... + 4341420.

Almost surely, 2^12013221032 is an apocalyptic number.

It is an amenable number.

12013221032 is a deficient number, since it is larger than the sum of its proper divisors (10641772108).

12013221032 is a wasteful number, since it uses less digits than its factorization.

12013221032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8680252 (or 8680248 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12013221032 its reverse (23012231021), we get a palindrome (35025452053).

The spelling of 12013221032 in words is "twelve billion, thirteen million, two hundred twenty-one thousand, thirty-two".