12344140221 has 16 divisors (see below), whose sum is σ = 19194000000. Its totient is φ = 7053793824.

The previous prime is 12344140217. The next prime is 12344140309. The reversal of 12344140221 is 12204144321.

It is not a de Polignac number, because 12344140221 - 2² = 12344140217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12344140191 and 12344140200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12344140021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5997096 + ... + 5999153.

It is an arithmetic number, because the mean of its divisors is an integer number (1199625000).

Almost surely, 2^12344140221 is an apocalyptic number.

It is an amenable number.

12344140221 is a deficient number, since it is larger than the sum of its proper divisors (6849859779).

12344140221 is an equidigital number, since it uses as much as digits as its factorization.

12344140221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11996273 (or 11996259 counting only the distinct ones).

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

Adding to 12344140221 its reverse (12204144321), we get a palindrome (24548284542).

The spelling of 12344140221 in words is "twelve billion, three hundred forty-four million, one hundred forty thousand, two hundred twenty-one".