22131212322 has 8 divisors (see below), whose sum is σ = 44262424656. Its totient is φ = 7377070772.

The previous prime is 22131212321. The next prime is 22131212393. The reversal of 22131212322 is 22321213122.

It is a sphenic number, since it is the product of 3 distinct primes.

22131212322 is an admirable number.

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 (22131212321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1844267688 + ... + 1844267699.

It is an arithmetic number, because the mean of its divisors is an integer number (5532803082).

Almost surely, 2^22131212322 is an apocalyptic number.

22131212322 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22131212322 is a wasteful number, since it uses less digits than its factorization.

22131212322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3688535392.

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

Adding to 22131212322 its reverse (22321213122), we get a palindrome (44452425444).

The spelling of 22131212322 in words is "twenty-two billion, one hundred thirty-one million, two hundred twelve thousand, three hundred twenty-two".