12132222320 has 40 divisors (see below), whose sum is σ = 28241679024. Its totient is φ = 4846994432.

The previous prime is 12132222307. The next prime is 12132222331. The reversal of 12132222320 is 2322223121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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 = 12132222292 and 12132222301.

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, 25529 + ... + 157848.

Almost surely, 2^12132222320 is an apocalyptic number.

12132222320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12132222320 is an abundant number, since it is smaller than the sum of its proper divisors (16109456704).

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

12132222320 is a wasteful number, since it uses less digits than its factorization.

12132222320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184217 (or 184211 counting only the distinct ones).

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

Adding to 12132222320 its reverse (2322223121), we get a palindrome (14454445441).

The spelling of 12132222320 in words is "twelve billion, one hundred thirty-two million, two hundred twenty-two thousand, three hundred twenty".