12221032308 has 24 divisors (see below), whose sum is σ = 29122461312. Its totient is φ = 3987003264.

The previous prime is 12221032277. The next prime is 12221032331. The reversal of 12221032308 is 80323012221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10833685 + ... + 10834812.

It is an arithmetic number, because the mean of its divisors is an integer number (1213435888).

Almost surely, 2^12221032308 is an apocalyptic number.

It is an amenable number.

12221032308 is an abundant number, since it is smaller than the sum of its proper divisors (16901429004).

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

12221032308 is a wasteful number, since it uses less digits than its factorization.

12221032308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21668551 (or 21668549 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 12221032308 its reverse (80323012221), we get a palindrome (92544044529).

The spelling of 12221032308 in words is "twelve billion, two hundred twenty-one million, thirty-two thousand, three hundred eight".