12123202220 has 24 divisors (see below), whose sum is σ = 25876083408. Its totient is φ = 4769784000.

The previous prime is 12123202213. The next prime is 12123202241. The reversal of 12123202220 is 2220232121.

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, 4967306 + ... + 4969745.

It is an arithmetic number, because the mean of its divisors is an integer number (1078170142).

Almost surely, 2^12123202220 is an apocalyptic number.

12123202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123202220 is an abundant number, since it is smaller than the sum of its proper divisors (13752881188).

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

12123202220 is a wasteful number, since it uses less digits than its factorization.

12123202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9937121 (or 9937119 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 12123202220 its reverse (2220232121), we get a palindrome (14343434341).

The spelling of 12123202220 in words is "twelve billion, one hundred twenty-three million, two hundred two thousand, two hundred twenty".