12222231320 has 64 divisors (see below), whose sum is σ = 29903065920. Its totient is φ = 4468990464.

The previous prime is 12222231319. The next prime is 12222231361. The reversal of 12222231320 is 2313222221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12222231292 and 12222231301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60539 + ... + 167658.

It is an arithmetic number, because the mean of its divisors is an integer number (467235405).

Almost surely, 2^12222231320 is an apocalyptic number.

12222231320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222231320 is an abundant number, since it is smaller than the sum of its proper divisors (17680834600).

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

12222231320 is a wasteful number, since it uses less digits than its factorization.

12222231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228324 (or 228320 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12222231320 its reverse (2313222221), we get a palindrome (14535453541).

Subtracting from 12222231320 its reverse (2313222221), we obtain a palindrome (9909009099).

The spelling of 12222231320 in words is "twelve billion, two hundred twenty-two million, two hundred thirty-one thousand, three hundred twenty".