12444420311 has 4 divisors (see below), whose sum is σ = 12448520952. Its totient is φ = 12440319672.

The previous prime is 12444420301. The next prime is 12444420323. The reversal of 12444420311 is 11302444421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11302444421 = 23 ⋅491410627.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12444420311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12444420301) 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, 2045765 + ... + 2051838.

It is an arithmetic number, because the mean of its divisors is an integer number (3112130238).

Almost surely, 2^12444420311 is an apocalyptic number.

12444420311 is a deficient number, since it is larger than the sum of its proper divisors (4100641).

12444420311 is an equidigital number, since it uses as much as digits as its factorization.

12444420311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100640.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 12444420311 its reverse (11302444421), we get a palindrome (23746864732).

The spelling of 12444420311 in words is "twelve billion, four hundred forty-four million, four hundred twenty thousand, three hundred eleven".