12245344220 has 24 divisors (see below), whose sum is σ = 25761413664. Its totient is φ = 4889339456.

The previous prime is 12245344217. The next prime is 12245344229. The reversal of 12245344220 is 2244354221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12245344229) 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, 538472 + ... + 560751.

It is an arithmetic number, because the mean of its divisors is an integer number (1073392236).

Almost surely, 2^12245344220 is an apocalyptic number.

12245344220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12245344220 is an abundant number, since it is smaller than the sum of its proper divisors (13516069444).

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

12245344220 is a wasteful number, since it uses less digits than its factorization.

12245344220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099789 (or 1099787 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 12245344220 its reverse (2244354221), we get a palindrome (14489698441).

The spelling of 12245344220 in words is "twelve billion, two hundred forty-five million, three hundred forty-four thousand, two hundred twenty".