21223222332 has 48 divisors (see below), whose sum is σ = 53624861472. Its totient is φ = 6494135040.

The previous prime is 21223222301. The next prime is 21223222343. The reversal of 21223222332 is 23322232212.

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

It is a congruent number.

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, 347583 + ... + 404054.

It is an arithmetic number, because the mean of its divisors is an integer number (1117184614).

Almost surely, 2^21223222332 is an apocalyptic number.

It is an amenable number.

21223222332 is an abundant number, since it is smaller than the sum of its proper divisors (32401639140).

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

21223222332 is a wasteful number, since it uses less digits than its factorization.

21223222332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751838 (or 751836 counting only the distinct ones).

The product of its digits is 3456, while the sum is 24.

Adding to 21223222332 its reverse (23322232212), we get a palindrome (44545454544).

The spelling of 21223222332 in words is "twenty-one billion, two hundred twenty-three million, two hundred twenty-two thousand, three hundred thirty-two".