12221302200 has 48 divisors (see below), whose sum is σ = 37886038680. Its totient is φ = 3259013760.

The previous prime is 12221302141. The next prime is 12221302213. The reversal of 12221302200 is 220312221.

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 12221302200.

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, 10183819 + ... + 10185018.

Almost surely, 2^12221302200 is an apocalyptic number.

12221302200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221302200 is an abundant number, since it is smaller than the sum of its proper divisors (25664736480).

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

12221302200 is a wasteful number, since it uses less digits than its factorization.

12221302200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20368856 (or 20368847 counting only the distinct ones).

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

Adding to 12221302200 its reverse (220312221), we get a palindrome (12441614421).

The spelling of 12221302200 in words is "twelve billion, two hundred twenty-one million, three hundred two thousand, two hundred".