12221213300 has 72 divisors (see below), whose sum is σ = 29300999616. Its totient is φ = 4400872960.

The previous prime is 12221213219. The next prime is 12221213339. The reversal of 12221213300 is 331212221.

12221213300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117182 + ... + 195381.

It is an arithmetic number, because the mean of its divisors is an integer number (406958328).

Almost surely, 2^12221213300 is an apocalyptic number.

12221213300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221213300 is an abundant number, since it is smaller than the sum of its proper divisors (17079786316).

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

12221213300 is a wasteful number, since it uses less digits than its factorization.

12221213300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312617 (or 312610 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12221213300 its reverse (331212221), we get a palindrome (12552425521).

The spelling of 12221213300 in words is "twelve billion, two hundred twenty-one million, two hundred thirteen thousand, three hundred".