12212403320 has 32 divisors (see below), whose sum is σ = 29591593920. Its totient is φ = 4509194880.

The previous prime is 12212403253. The next prime is 12212403323. The reversal of 12212403320 is 2330421221.

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 = 12212403292 and 12212403301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212403323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11742176 + ... + 11743215.

It is an arithmetic number, because the mean of its divisors is an integer number (924737310).

Almost surely, 2^12212403320 is an apocalyptic number.

12212403320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212403320 is an abundant number, since it is smaller than the sum of its proper divisors (17379190600).

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

12212403320 is a wasteful number, since it uses less digits than its factorization.

12212403320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23485415 (or 23485411 counting only the distinct ones).

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

Adding to 12212403320 its reverse (2330421221), we get a palindrome (14542824541).

The spelling of 12212403320 in words is "twelve billion, two hundred twelve million, four hundred three thousand, three hundred twenty".