12222101321 has 4 divisors (see below), whose sum is σ = 12222370500. Its totient is φ = 12221832144.

The previous prime is 12222101317. The next prime is 12222101327. The reversal of 12222101321 is 12310122221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12310122221 = 53 ⋅232266457.

It can be written as a sum of positive squares in 2 ways, for example, as 9488902921 + 2733198400 = 97411^2 + 52280^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222101321 - 2² = 12222101317 is a prime.

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 12222101321.

It is not an unprimeable number, because it can be changed into a prime (12222101327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47846 + ... + 163503.

It is an arithmetic number, because the mean of its divisors is an integer number (3055592625).

Almost surely, 2^12222101321 is an apocalyptic number.

It is an amenable number.

12222101321 is a deficient number, since it is larger than the sum of its proper divisors (269179).

12222101321 is an equidigital number, since it uses as much as digits as its factorization.

12222101321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269178.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12222101321 its reverse (12310122221), we get a palindrome (24532223542).

The spelling of 12222101321 in words is "twelve billion, two hundred twenty-two million, one hundred one thousand, three hundred twenty-one".