222231331212 has 72 divisors (see below), whose sum is σ = 582092302848. Its totient is φ = 65909981280.

The previous prime is 222231331183. The next prime is 222231331213. The reversal of 222231331212 is 212133132222.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (222231331213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1559968 + ... + 1696455.

Almost surely, 2^222231331212 is an apocalyptic number.

222231331212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222231331212 is an abundant number, since it is smaller than the sum of its proper divisors (359860971636).

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

222231331212 is a wasteful number, since it uses less digits than its factorization.

222231331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256499 (or 3256486 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

Adding to 222231331212 its reverse (212133132222), we get a palindrome (434364463434).

The spelling of 222231331212 in words is "two hundred twenty-two billion, two hundred thirty-one million, three hundred thirty-one thousand, two hundred twelve".