12921201222 has 16 divisors (see below), whose sum is σ = 25848521280. Its totient is φ = 4306047272.

The previous prime is 12921201221. The next prime is 12921201239. The reversal of 12921201222 is 22210212921.

It is a junction number, because it is equal to n+sod(n) for n = 12921201192 and 12921201201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12921201221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227268 + ... + 278375.

It is an arithmetic number, because the mean of its divisors is an integer number (1615532580).

Almost surely, 2^12921201222 is an apocalyptic number.

12921201222 is an abundant number, since it is smaller than the sum of its proper divisors (12927320058).

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

12921201222 is a wasteful number, since it uses less digits than its factorization.

12921201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509907.

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 12921201222 in words is "twelve billion, nine hundred twenty-one million, two hundred one thousand, two hundred twenty-two".