12221203124 has 24 divisors (see below), whose sum is σ = 23422650720. Its totient is φ = 5544951264.

The previous prime is 12221203097. The next prime is 12221203177. The reversal of 12221203124 is 42130212221.

It is a junction number, because it is equal to n+sod(n) for n = 12221203096 and 12221203105.

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, 1988654 + ... + 1994789.

It is an arithmetic number, because the mean of its divisors is an integer number (975943780).

Almost surely, 2^12221203124 is an apocalyptic number.

It is an amenable number.

12221203124 is a deficient number, since it is larger than the sum of its proper divisors (11201447596).

12221203124 is a wasteful number, since it uses less digits than its factorization.

12221203124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3983519 (or 3983517 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12221203124 its reverse (42130212221), we get a palindrome (54351415345).

The spelling of 12221203124 in words is "twelve billion, two hundred twenty-one million, two hundred three thousand, one hundred twenty-four".