12222724321 has 8 divisors (see below), whose sum is σ = 12432045600. Its totient is φ = 12013475040.

The previous prime is 12222724273. The next prime is 12222724369. The reversal of 12222724321 is 12342722221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12222724273) and next prime (12222724369).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12222724321 - 2⁹ = 12222723809 is a prime.

It is a super-2 number, since 2×12222724321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12222724321.

It is not an unprimeable number, because it can be changed into a prime (12222724021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411085 + ... + 439813.

It is an arithmetic number, because the mean of its divisors is an integer number (1554005700).

Almost surely, 2^12222724321 is an apocalyptic number.

It is an amenable number.

12222724321 is a deficient number, since it is larger than the sum of its proper divisors (209321279).

12222724321 is an equidigital number, since it uses as much as digits as its factorization.

12222724321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35999.

The product of its digits is 5376, while the sum is 28.

The spelling of 12222724321 in words is "twelve billion, two hundred twenty-two million, seven hundred twenty-four thousand, three hundred twenty-one".