222131442 has 16 divisors (see below), whose sum is σ = 478437120. Its totient is φ = 68348112.

The previous prime is 222131431. The next prime is 222131443. The reversal of 222131442 is 244131222.

It is not an unprimeable number, because it can be changed into a prime (222131443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1423842 + ... + 1423997.

It is an arithmetic number, because the mean of its divisors is an integer number (29902320).

Almost surely, 2^222131442 is an apocalyptic number.

222131442 is an abundant number, since it is smaller than the sum of its proper divisors (256305678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222131442 is a wasteful number, since it uses less digits than its factorization.

222131442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847857.

The product of its digits is 768, while the sum is 21.

The square root of 222131442 is about 14904.0746777517. The cubic root of 222131442 is about 605.6243737380.

Adding to 222131442 its reverse (244131222), we get a palindrome (466262664).

The spelling of 222131442 in words is "two hundred twenty-two million, one hundred thirty-one thousand, four hundred forty-two".