12221304502 has 16 divisors (see below), whose sum is σ = 20000316672. Its totient is φ = 5554633320.

The previous prime is 12221304463. The next prime is 12221304521. The reversal of 12221304502 is 20540312221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 338863 + ... + 373189.

It is an arithmetic number, because the mean of its divisors is an integer number (1250019792).

Almost surely, 2^12221304502 is an apocalyptic number.

12221304502 is a deficient number, since it is larger than the sum of its proper divisors (7779012170).

12221304502 is a wasteful number, since it uses less digits than its factorization.

12221304502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50523.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 12221304502 its reverse (20540312221), we get a palindrome (32761616723).

The spelling of 12221304502 in words is "twelve billion, two hundred twenty-one million, three hundred four thousand, five hundred two".