12022203221 has 4 divisors (see below), whose sum is σ = 13739660832. Its totient is φ = 10304745612.

The previous prime is 12022203187. The next prime is 12022203253. The reversal of 12022203221 is 12230222021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12230222021 = 31 ⋅394523291.

It is not a de Polignac number, because 12022203221 - 2¹⁸ = 12021941077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12022203221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022200221) 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, 858728795 + ... + 858728808.

It is an arithmetic number, because the mean of its divisors is an integer number (3434915208).

Almost surely, 2^12022203221 is an apocalyptic number.

It is an amenable number.

12022203221 is a deficient number, since it is larger than the sum of its proper divisors (1717457611).

12022203221 is an equidigital number, since it uses as much as digits as its factorization.

12022203221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717457610.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 12022203221 its reverse (12230222021), we get a palindrome (24252425242).

The spelling of 12022203221 in words is "twelve billion, twenty-two million, two hundred three thousand, two hundred twenty-one".