12225510220 has 192 divisors, whose sum is σ = 34167619584. Its totient is φ = 3557191680.

The previous prime is 12225510217. The next prime is 12225510221. The reversal of 12225510220 is 2201552221.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12225510191 and 12225510200.

It is not an unprimeable number, because it can be changed into a prime (12225510221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3323022 + ... + 3326698.

It is an arithmetic number, because the mean of its divisors is an integer number (177956352).

Almost surely, 2^12225510220 is an apocalyptic number.

12225510220 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 12225510220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17083809792).

12225510220 is an abundant number, since it is smaller than the sum of its proper divisors (21942109364).

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

12225510220 is a wasteful number, since it uses less digits than its factorization.

12225510220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3848 (or 3846 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The spelling of 12225510220 in words is "twelve billion, two hundred twenty-five million, five hundred ten thousand, two hundred twenty".