222131203212 has 24 divisors (see below), whose sum is σ = 520589434176. Its totient is φ = 73717549648.

The previous prime is 222131203201. The next prime is 222131203213. The reversal of 222131203212 is 212302131222.

It is not an unprimeable number, because it can be changed into a prime (222131203213) 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, 40770258 + ... + 40775705.

It is an arithmetic number, because the mean of its divisors is an integer number (21691226424).

Almost surely, 2^222131203212 is an apocalyptic number.

It is an amenable number.

222131203212 is an abundant number, since it is smaller than the sum of its proper divisors (298458230964).

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

222131203212 is a wasteful number, since it uses less digits than its factorization.

222131203212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81546197 (or 81546195 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 222131203212 its reverse (212302131222), we get a palindrome (434433334434).

The spelling of 222131203212 in words is "two hundred twenty-two billion, one hundred thirty-one million, two hundred three thousand, two hundred twelve".