12822264221 has 4 divisors (see below), whose sum is σ = 13808592252. Its totient is φ = 11835936192.

The previous prime is 12822264173. The next prime is 12822264269. The reversal of 12822264221 is 12246222821.

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

It is an interprime number because it is at equal distance from previous prime (12822264173) and next prime (12822264269).

It can be written as a sum of positive squares in 2 ways, for example, as 5958141721 + 6864122500 = 77189^2 + 82850^2 .

It is a cyclic number.

It is not a de Polignac number, because 12822264221 - 2¹⁸ = 12822002077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12822264821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493163996 + ... + 493164021.

It is an arithmetic number, because the mean of its divisors is an integer number (3452148063).

Almost surely, 2^12822264221 is an apocalyptic number.

It is an amenable number.

12822264221 is a deficient number, since it is larger than the sum of its proper divisors (986328031).

12822264221 is an equidigital number, since it uses as much as digits as its factorization.

12822264221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986328030.

The product of its digits is 12288, while the sum is 32.

The spelling of 12822264221 in words is "twelve billion, eight hundred twenty-two million, two hundred sixty-four thousand, two hundred twenty-one".