12344123220 has 96 divisors (see below), whose sum is σ = 40606151040. Its totient is φ = 2762319360.

The previous prime is 12344123201. The next prime is 12344123221. The reversal of 12344123220 is 2232144321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12344123221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 710775 + ... + 727934.

It is an arithmetic number, because the mean of its divisors is an integer number (422980740).

Almost surely, 2^12344123220 is an apocalyptic number.

12344123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12344123220 is an abundant number, since it is smaller than the sum of its proper divisors (28262027820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12344123220 is a wasteful number, since it uses less digits than its factorization.

12344123220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438745 (or 1438743 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12344123220 its reverse (2232144321), we get a palindrome (14576267541).

The spelling of 12344123220 in words is "twelve billion, three hundred forty-four million, one hundred twenty-three thousand, two hundred twenty".