12212431442 has 16 divisors (see below), whose sum is σ = 18422854272. Its totient is φ = 6071535120.

The previous prime is 12212431433. The next prime is 12212431447. The reversal of 12212431442 is 24413421221.

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, 452348 + ... + 478584.

It is an arithmetic number, because the mean of its divisors is an integer number (1151428392).

Almost surely, 2^12212431442 is an apocalyptic number.

12212431442 is a deficient number, since it is larger than the sum of its proper divisors (6210422830).

12212431442 is a wasteful number, since it uses less digits than its factorization.

12212431442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27553.

The product of its digits is 3072, while the sum is 26.

Adding to 12212431442 its reverse (24413421221), we get a palindrome (36625852663).

The spelling of 12212431442 in words is "twelve billion, two hundred twelve million, four hundred thirty-one thousand, four hundred forty-two".