222232112440 has 32 divisors (see below), whose sum is σ = 538485504480. Its totient is φ = 82054933632.

The previous prime is 222232112353. The next prime is 222232112441. The reversal of 222232112440 is 44211232222.

It is a super-2 number, since 2×222232112440² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222232112441) 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, 213684204 + ... + 213685243.

It is an arithmetic number, because the mean of its divisors is an integer number (16827672015).

Almost surely, 2^222232112440 is an apocalyptic number.

222232112440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222232112440 is an abundant number, since it is smaller than the sum of its proper divisors (316253392040).

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

222232112440 is a wasteful number, since it uses less digits than its factorization.

222232112440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427369471 (or 427369467 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 222232112440 its reverse (44211232222), we get a palindrome (266443344662).

The spelling of 222232112440 in words is "two hundred twenty-two billion, two hundred thirty-two million, one hundred twelve thousand, four hundred forty".