12203222100 has 36 divisors (see below), whose sum is σ = 35307990144. Its totient is φ = 3254192480.

The previous prime is 12203222099. The next prime is 12203222123. The reversal of 12203222100 is 122230221.

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 12203222100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20338404 + ... + 20339003.

It is an arithmetic number, because the mean of its divisors is an integer number (980777504).

Almost surely, 2^12203222100 is an apocalyptic number.

12203222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12203222100 is an abundant number, since it is smaller than the sum of its proper divisors (23104768044).

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

12203222100 is a wasteful number, since it uses less digits than its factorization.

12203222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40677424 (or 40677417 counting only the distinct ones).

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

Adding to 12203222100 its reverse (122230221), we get a palindrome (12325452321).

The spelling of 12203222100 in words is "twelve billion, two hundred three million, two hundred twenty-two thousand, one hundred".