12212431443 has 6 divisors (see below), whose sum is σ = 17640178764. Its totient is φ = 8141620956.

The previous prime is 12212431433. The next prime is 12212431447. The reversal of 12212431443 is 34413421221.

12212431443 is a `hidden beast` number, since 1 + 2 + 212 + 4 + 3 + 1 + 443 = 666.

It is not a de Polignac number, because 12212431443 - 2³² = 7917464147 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 678468405 + ... + 678468422.

It is an arithmetic number, because the mean of its divisors is an integer number (2940029794).

Almost surely, 2^12212431443 is an apocalyptic number.

12212431443 is a deficient number, since it is larger than the sum of its proper divisors (5427747321).

12212431443 is a wasteful number, since it uses less digits than its factorization.

12212431443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356936833 (or 1356936830 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 12212431443 its reverse (34413421221), we get a palindrome (46625852664).

The spelling of 12212431443 in words is "twelve billion, two hundred twelve million, four hundred thirty-one thousand, four hundred forty-three".