12222032100 has 144 divisors (see below), whose sum is σ = 38090895360. Its totient is φ = 3016886400.

The previous prime is 12222032047. The next prime is 12222032161. The reversal of 12222032100 is 123022221.

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 12222032100.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 185331 + ... + 242469.

Almost surely, 2^12222032100 is an apocalyptic number.

12222032100 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 12222032100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19045447680).

12222032100 is an abundant number, since it is smaller than the sum of its proper divisors (25868863260).

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

12222032100 is a wasteful number, since it uses less digits than its factorization.

12222032100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57210 (or 57203 counting only the distinct ones).

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

Adding to 12222032100 its reverse (123022221), we get a palindrome (12345054321).

The spelling of 12222032100 in words is "twelve billion, two hundred twenty-two million, thirty-two thousand, one hundred".