12023321444 has 6 divisors (see below), whose sum is σ = 21040812534. Its totient is φ = 6011660720.

The previous prime is 12023321441. The next prime is 12023321447. The reversal of 12023321444 is 44412332021.

It is an interprime number because it is at equal distance from previous prime (12023321441) and next prime (12023321447).

It can be written as a sum of positive squares in only one way, i.e., 11548081444 + 475240000 = 107462^2 + 21800^2 .

It is not an unprimeable number, because it can be changed into a prime (12023321441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1502915177 + ... + 1502915184.

It is an arithmetic number, because the mean of its divisors is an integer number (3506802089).

Almost surely, 2^12023321444 is an apocalyptic number.

It is an amenable number.

12023321444 is a deficient number, since it is larger than the sum of its proper divisors (9017491090).

12023321444 is a wasteful number, since it uses less digits than its factorization.

12023321444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005830365 (or 3005830363 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 12023321444 its reverse (44412332021), we get a palindrome (56435653465).

The spelling of 12023321444 in words is "twelve billion, twenty-three million, three hundred twenty-one thousand, four hundred forty-four".