12212431444 has 24 divisors (see below), whose sum is σ = 21576034368. Its totient is φ = 6048110400.

The previous prime is 12212431433. The next prime is 12212431447. The reversal of 12212431444 is 44413421221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212431447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156744 + ... + 221344.

It is an arithmetic number, because the mean of its divisors is an integer number (899001432).

Almost surely, 2^12212431444 is an apocalyptic number.

It is an amenable number.

12212431444 is a deficient number, since it is larger than the sum of its proper divisors (9363602924).

12212431444 is a wasteful number, since it uses less digits than its factorization.

12212431444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65055 (or 65053 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

Adding to 12212431444 its reverse (44413421221), we get a palindrome (56625852665).

The spelling of 12212431444 in words is "twelve billion, two hundred twelve million, four hundred thirty-one thousand, four hundred forty-four".