22221212322 has 32 divisors (see below), whose sum is σ = 45907486272. Its totient is φ = 7165209024.

The previous prime is 22221212287. The next prime is 22221212323. The reversal of 22221212322 is 22321212222.

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 (22221212323) 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 15 ways as a sum of consecutive naturals, for example, 250888 + ... + 327699.

It is an arithmetic number, because the mean of its divisors is an integer number (1434608946).

Almost surely, 2^22221212322 is an apocalyptic number.

22221212322 is an abundant number, since it is smaller than the sum of its proper divisors (23686273950).

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

22221212322 is a wasteful number, since it uses less digits than its factorization.

22221212322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578802.

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

Adding to 22221212322 its reverse (22321212222), we get a palindrome (44542424544).

The spelling of 22221212322 in words is "twenty-two billion, two hundred twenty-one million, two hundred twelve thousand, three hundred twenty-two".