12223212120 has 128 divisors (see below), whose sum is σ = 46564646400. Its totient is φ = 2793875328.

The previous prime is 12223212103. The next prime is 12223212167. The reversal of 12223212120 is 2121232221.

12223212120 is a `hidden beast` number, since 1 + 222 + 321 + 2 + 120 = 666.

12223212120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 12223212093 and 12223212102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 800854 + ... + 815973.

It is an arithmetic number, because the mean of its divisors is an integer number (363786300).

Almost surely, 2^12223212120 is an apocalyptic number.

12223212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12223212120 is an abundant number, since it is smaller than the sum of its proper divisors (34341434280).

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

12223212120 is a wasteful number, since it uses less digits than its factorization.

12223212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616854 (or 1616844 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12223212120 its reverse (2121232221), we get a palindrome (14344444341).

The spelling of 12223212120 in words is "twelve billion, two hundred twenty-three million, two hundred twelve thousand, one hundred twenty".