12221006452 has 12 divisors (see below), whose sum is σ = 21422469600. Its totient is φ = 6100300856.

The previous prime is 12221006389. The next prime is 12221006471. The reversal of 12221006452 is 25460012221.

12221006452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2547898 + ... + 2552689.

It is an arithmetic number, because the mean of its divisors is an integer number (1785205800).

Almost surely, 2^12221006452 is an apocalyptic number.

It is an amenable number.

12221006452 is a deficient number, since it is larger than the sum of its proper divisors (9201463148).

12221006452 is a wasteful number, since it uses less digits than its factorization.

12221006452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5101190 (or 5101188 counting only the distinct ones).

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

Adding to 12221006452 its reverse (25460012221), we get a palindrome (37681018673).

The spelling of 12221006452 in words is "twelve billion, two hundred twenty-one million, six thousand, four hundred fifty-two".