22212221232 has 80 divisors (see below), whose sum is σ = 57759160320. Its totient is φ = 7355462400.

The previous prime is 22212221221. The next prime is 22212221261. The reversal of 22212221232 is 23212221222.

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

It is a junction number, because it is equal to n+sod(n) for n = 22212221199 and 22212221208.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10734694 + ... + 10736762.

It is an arithmetic number, because the mean of its divisors is an integer number (721989504).

Almost surely, 2^22212221232 is an apocalyptic number.

It is an amenable number.

22212221232 is an abundant number, since it is smaller than the sum of its proper divisors (35546939088).

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

22212221232 is a wasteful number, since it uses less digits than its factorization.

22212221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442 (or 3436 counting only the distinct ones).

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

Adding to 22212221232 its reverse (23212221222), we get a palindrome (45424442454).

The spelling of 22212221232 in words is "twenty-two billion, two hundred twelve million, two hundred twenty-one thousand, two hundred thirty-two".