22321220232 has 32 divisors (see below), whose sum is σ = 55835354880. Its totient is φ = 7436099520.

The previous prime is 22321220219. The next prime is 22321220237. The reversal of 22321220232 is 23202212322.

It is a super-3 number, since 3×22321220232³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 22321220199 and 22321220208.

It is not an unprimeable number, because it can be changed into a prime (22321220237) 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, 226744 + ... + 309927.

It is an arithmetic number, because the mean of its divisors is an integer number (1744854840).

Almost surely, 2^22321220232 is an apocalyptic number.

It is an amenable number.

22321220232 is an abundant number, since it is smaller than the sum of its proper divisors (33514134648).

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

22321220232 is a wasteful number, since it uses less digits than its factorization.

22321220232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538413 (or 538409 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 22321220232 its reverse (23202212322), we get a palindrome (45523432554).

The spelling of 22321220232 in words is "twenty-two billion, three hundred twenty-one million, two hundred twenty thousand, two hundred thirty-two".