12220323210 has 48 divisors (see below), whose sum is σ = 32015412000. Its totient is φ = 3233873760.

The previous prime is 12220323169. The next prime is 12220323211. The reversal of 12220323210 is 1232302221.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12220323211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 506460 + ... + 530039.

It is an arithmetic number, because the mean of its divisors is an integer number (666987750).

Almost surely, 2^12220323210 is an apocalyptic number.

12220323210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12220323210 is an abundant number, since it is smaller than the sum of its proper divisors (19795088790).

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

12220323210 is a wasteful number, since it uses less digits than its factorization.

12220323210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036643 (or 1036640 counting only the distinct ones).

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

Adding to 12220323210 its reverse (1232302221), we get a palindrome (13452625431).

The spelling of 12220323210 in words is "twelve billion, two hundred twenty million, three hundred twenty-three thousand, two hundred ten".