12243241220 has 96 divisors (see below), whose sum is σ = 31836043008. Its totient is φ = 3858849792.

The previous prime is 12243241201. The next prime is 12243241229. The reversal of 12243241220 is 2214234221.

It is a super-2 number, since 2×12243241220² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12243241229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42524 + ... + 162156.

It is an arithmetic number, because the mean of its divisors is an integer number (331625448).

Almost surely, 2^12243241220 is an apocalyptic number.

12243241220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12243241220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15918021504).

12243241220 is an abundant number, since it is smaller than the sum of its proper divisors (19592801788).

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

12243241220 is a wasteful number, since it uses less digits than its factorization.

12243241220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119709 (or 119707 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 12243241220 its reverse (2214234221), we get a palindrome (14457475441).

The spelling of 12243241220 in words is "twelve billion, two hundred forty-three million, two hundred forty-one thousand, two hundred twenty".