12221403225 has 24 divisors (see below), whose sum is σ = 20216539392. Its totient is φ = 6514699200.

The previous prime is 12221403199. The next prime is 12221403263. The reversal of 12221403225 is 52230412221.

12221403225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12221403225 - 2¹⁰ = 12221402201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12221403195 and 12221403204.

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, 106680 + ... + 189270.

It is an arithmetic number, because the mean of its divisors is an integer number (842355808).

Almost surely, 2^12221403225 is an apocalyptic number.

12221403225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12221403225 is a deficient number, since it is larger than the sum of its proper divisors (7995136167).

12221403225 is a wasteful number, since it uses less digits than its factorization.

12221403225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84577 (or 84572 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 12221403225 its reverse (52230412221), we get a palindrome (64451815446).

The spelling of 12221403225 in words is "twelve billion, two hundred twenty-one million, four hundred three thousand, two hundred twenty-five".