12444122501 has 4 divisors (see below), whose sum is σ = 12619391904. Its totient is φ = 12268853100.

The previous prime is 12444122497. The next prime is 12444122513. The reversal of 12444122501 is 10522144421.

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.

It is a cyclic number.

It is not a de Polignac number, because 12444122501 - 2² = 12444122497 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 (12444112501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87634595 + ... + 87634736.

It is an arithmetic number, because the mean of its divisors is an integer number (3154847976).

Almost surely, 2^12444122501 is an apocalyptic number.

It is an amenable number.

12444122501 is a deficient number, since it is larger than the sum of its proper divisors (175269403).

12444122501 is an equidigital number, since it uses as much as digits as its factorization.

12444122501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175269402.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 12444122501 its reverse (10522144421), we get a palindrome (22966266922).

The spelling of 12444122501 in words is "twelve billion, four hundred forty-four million, one hundred twenty-two thousand, five hundred one".