12215226403 has 4 divisors (see below), whose sum is σ = 12224689528. Its totient is φ = 12205763280.

The previous prime is 12215226383. The next prime is 12215226409. The reversal of 12215226403 is 30462251221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12215226403 - 2⁵ = 12215226371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12215226409) 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 3 ways as a sum of consecutive naturals, for example, 4729626 + ... + 4732207.

It is an arithmetic number, because the mean of its divisors is an integer number (3056172382).

Almost surely, 2^12215226403 is an apocalyptic number.

12215226403 is a deficient number, since it is larger than the sum of its proper divisors (9463125).

12215226403 is an equidigital number, since it uses as much as digits as its factorization.

12215226403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9463124.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 12215226403 its reverse (30462251221), we get a palindrome (42677477624).

The spelling of 12215226403 in words is "twelve billion, two hundred fifteen million, two hundred twenty-six thousand, four hundred three".