12223131220 has 24 divisors (see below), whose sum is σ = 25993497600. Its totient is φ = 4827362592.

The previous prime is 12223131181. The next prime is 12223131233. The reversal of 12223131220 is 2213132221.

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, 3866500 + ... + 3869659.

It is an arithmetic number, because the mean of its divisors is an integer number (1083062400).

Almost surely, 2^12223131220 is an apocalyptic number.

12223131220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12223131220 is an abundant number, since it is smaller than the sum of its proper divisors (13770366380).

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

12223131220 is a wasteful number, since it uses less digits than its factorization.

12223131220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7736247 (or 7736245 counting only the distinct ones).

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

Adding to 12223131220 its reverse (2213132221), we get a palindrome (14436263441).

The spelling of 12223131220 in words is "twelve billion, two hundred twenty-three million, one hundred thirty-one thousand, two hundred twenty".