12223322121 has 4 divisors (see below), whose sum is σ = 16297762832. Its totient is φ = 8148881412.

The previous prime is 12223322119. The next prime is 12223322123. The reversal of 12223322121 is 12122332221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12122332221 = 3 ⋅4040777407.

It is an interprime number because it is at equal distance from previous prime (12223322119) and next prime (12223322123).

It is not a de Polignac number, because 12223322121 - 2¹ = 12223322119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12223322123) 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, 2037220351 + ... + 2037220356.

It is an arithmetic number, because the mean of its divisors is an integer number (4074440708).

Almost surely, 2^12223322121 is an apocalyptic number.

It is an amenable number.

12223322121 is a deficient number, since it is larger than the sum of its proper divisors (4074440711).

12223322121 is an equidigital number, since it uses as much as digits as its factorization.

12223322121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074440710.

The product of its digits is 576, while the sum is 21.

Adding to 12223322121 its reverse (12122332221), we get a palindrome (24345654342).

The spelling of 12223322121 in words is "twelve billion, two hundred twenty-three million, three hundred twenty-two thousand, one hundred twenty-one".