12221253412 has 12 divisors (see below), whose sum is σ = 22317071616. Its totient is φ = 5844947240.

The previous prime is 12221253383. The next prime is 12221253431. The reversal of 12221253412 is 21435212221.

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, 66419764 + ... + 66419947.

It is an arithmetic number, because the mean of its divisors is an integer number (1859755968).

Almost surely, 2^12221253412 is an apocalyptic number.

It is an amenable number.

12221253412 is a deficient number, since it is larger than the sum of its proper divisors (10095818204).

12221253412 is a wasteful number, since it uses less digits than its factorization.

12221253412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132839738 (or 132839736 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

Adding to 12221253412 its reverse (21435212221), we get a palindrome (33656465633).

The spelling of 12221253412 in words is "twelve billion, two hundred twenty-one million, two hundred fifty-three thousand, four hundred twelve".