12321200220 has 96 divisors (see below), whose sum is σ = 40344826368. Its totient is φ = 2750775552.

The previous prime is 12321200179. The next prime is 12321200233. The reversal of 12321200220 is 2200212321.

It is a happy number.

It is a super-2 number, since 2×12321200220² (a number of 21 digits) contains 22 as substring.

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 12321200220.

It is a congruent number.

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, 323059 + ... + 359178.

It is an arithmetic number, because the mean of its divisors is an integer number (420258608).

Almost surely, 2^12321200220 is an apocalyptic number.

12321200220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12321200220 is an abundant number, since it is smaller than the sum of its proper divisors (28023626148).

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

12321200220 is a wasteful number, since it uses less digits than its factorization.

12321200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682299 (or 682297 counting only the distinct ones).

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

Adding to 12321200220 its reverse (2200212321), we get a palindrome (14521412541).

The spelling of 12321200220 in words is "twelve billion, three hundred twenty-one million, two hundred thousand, two hundred twenty".