12212203320 has 48 divisors (see below), whose sum is σ = 39689661960. Its totient is φ = 3256587456.

The previous prime is 12212203319. The next prime is 12212203327. The reversal of 12212203320 is 2330221221.

12212203320 is a `hidden beast` number, since 122 + 1 + 220 + 3 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12212203293 and 12212203302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212203327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16961034 + ... + 16961753.

Almost surely, 2^12212203320 is an apocalyptic number.

12212203320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212203320 is an abundant number, since it is smaller than the sum of its proper divisors (27477458640).

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

12212203320 is a wasteful number, since it uses less digits than its factorization.

12212203320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33922804 (or 33922797 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12212203320 its reverse (2330221221), we get a palindrome (14542424541).

The spelling of 12212203320 in words is "twelve billion, two hundred twelve million, two hundred three thousand, three hundred twenty".