12120230220 has 96 divisors (see below), whose sum is σ = 38854384128. Its totient is φ = 2765363712.

The previous prime is 12120230197. The next prime is 12120230231. The reversal of 12120230220 is 2203202121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12120230220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210832 + ... + 262088.

It is an arithmetic number, because the mean of its divisors is an integer number (404733168).

Almost surely, 2^12120230220 is an apocalyptic number.

12120230220 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 12120230220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19427192064).

12120230220 is an abundant number, since it is smaller than the sum of its proper divisors (26734153908).

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

12120230220 is a wasteful number, since it uses less digits than its factorization.

12120230220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51839 (or 51837 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 12120230220 its reverse (2203202121), we get a palindrome (14323432341).

The spelling of 12120230220 in words is "twelve billion, one hundred twenty million, two hundred thirty thousand, two hundred twenty".