12213320100 has 72 divisors (see below), whose sum is σ = 36159039840. Its totient is φ = 3181140480.

The previous prime is 12213320083. The next prime is 12213320107. The reversal of 12213320100 is 102331221.

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 12213320100.

It is not an unprimeable number, because it can be changed into a prime (12213320107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 460485 + ... + 486284.

Almost surely, 2^12213320100 is an apocalyptic number.

12213320100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12213320100 is an abundant number, since it is smaller than the sum of its proper divisors (23945719740).

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

12213320100 is a wasteful number, since it uses less digits than its factorization.

12213320100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946829 (or 946822 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12213320100 its reverse (102331221), we get a palindrome (12315651321).

The spelling of 12213320100 in words is "twelve billion, two hundred thirteen million, three hundred twenty thousand, one hundred".