12221223331 has 8 divisors (see below), whose sum is σ = 12270607760. Its totient is φ = 12171938688.

The previous prime is 12221223323. The next prime is 12221223349. The reversal of 12221223331 is 13332212221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12221223331 - 2³ = 12221223323 is a prime.

It is a super-2 number, since 2×12221223331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221220331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225535 + ... + 274423.

It is an arithmetic number, because the mean of its divisors is an integer number (1533825970).

Almost surely, 2^12221223331 is an apocalyptic number.

12221223331 is a deficient number, since it is larger than the sum of its proper divisors (49384429).

12221223331 is an equidigital number, since it uses as much as digits as its factorization.

12221223331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49893.

The product of its digits is 864, while the sum is 22.

Adding to 12221223331 its reverse (13332212221), we get a palindrome (25553435552).

The spelling of 12221223331 in words is "twelve billion, two hundred twenty-one million, two hundred twenty-three thousand, three hundred thirty-one".