12344222121 has 64 divisors (see below), whose sum is σ = 21943166976. Its totient is φ = 5975424000.

The previous prime is 12344222113. The next prime is 12344222129. The reversal of 12344222121 is 12122244321.

It is an interprime number because it is at equal distance from previous prime (12344222113) and next prime (12344222129).

It is not a de Polignac number, because 12344222121 - 2³ = 12344222113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12344222091 and 12344222100.

It is not an unprimeable number, because it can be changed into a prime (12344222129) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 381066 + ... + 412188.

It is an arithmetic number, because the mean of its divisors is an integer number (342861984).

Almost surely, 2^12344222121 is an apocalyptic number.

12344222121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12344222121 is a deficient number, since it is larger than the sum of its proper divisors (9598944855).

12344222121 is a wasteful number, since it uses less digits than its factorization.

12344222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31262.

The product of its digits is 1536, while the sum is 24.

Adding to 12344222121 its reverse (12122244321), we get a palindrome (24466466442).

It can be divided in two parts, 123 and 44222121, that added together give a palindrome (44222244).

The spelling of 12344222121 in words is "twelve billion, three hundred forty-four million, two hundred twenty-two thousand, one hundred twenty-one".