12442234021 has 8 divisors (see below), whose sum is σ = 14236896960. Its totient is φ = 10651871328.

The previous prime is 12442234019. The next prime is 12442234033. The reversal of 12442234021 is 12043224421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12442234021 - 2¹ = 12442234019 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 (12442234081) 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 7 ways as a sum of consecutive naturals, for example, 1068856 + ... + 1080433.

It is an arithmetic number, because the mean of its divisors is an integer number (1779612120).

Almost surely, 2^12442234021 is an apocalyptic number.

It is an amenable number.

12442234021 is a deficient number, since it is larger than the sum of its proper divisors (1794662939).

12442234021 is an equidigital number, since it uses as much as digits as its factorization.

12442234021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150123.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 12442234021 its reverse (12043224421), we get a palindrome (24485458442).

The spelling of 12442234021 in words is "twelve billion, four hundred forty-two million, two hundred thirty-four thousand, twenty-one".