12213312220 has 24 divisors (see below), whose sum is σ = 25956970704. Its totient is φ = 4826464896.

The previous prime is 12213312173. The next prime is 12213312247. The reversal of 12213312220 is 2221331221.

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, 3677049 + ... + 3680368.

It is an arithmetic number, because the mean of its divisors is an integer number (1081540446).

Almost surely, 2^12213312220 is an apocalyptic number.

12213312220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12213312220 is an abundant number, since it is smaller than the sum of its proper divisors (13743658484).

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

12213312220 is a wasteful number, since it uses less digits than its factorization.

12213312220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7357509 (or 7357507 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12213312220 its reverse (2221331221), we get a palindrome (14434643441).

The spelling of 12213312220 in words is "twelve billion, two hundred thirteen million, three hundred twelve thousand, two hundred twenty".