22231232320 has 56 divisors (see below), whose sum is σ = 57750687648. Its totient is φ = 8084083200.

The previous prime is 22231232281. The next prime is 22231232371. The reversal of 22231232320 is 2323213222.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 22231232291 and 22231232300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3154326 + ... + 3161365.

Almost surely, 2^22231232320 is an apocalyptic number.

22231232320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22231232320 is an abundant number, since it is smaller than the sum of its proper divisors (35519455328).

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

22231232320 is a wasteful number, since it uses less digits than its factorization.

22231232320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6315719 (or 6315709 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 22231232320 its reverse (2323213222), we get a palindrome (24554445542).

The spelling of 22231232320 in words is "twenty-two billion, two hundred thirty-one million, two hundred thirty-two thousand, three hundred twenty".