12232221331 has 4 divisors (see below), whose sum is σ = 13344241464. Its totient is φ = 11120201200.

The previous prime is 12232221317. The next prime is 12232221367. The reversal of 12232221331 is 13312223221.

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 12232221331 - 2¹⁷ = 12232090259 is a prime.

It is a super-2 number, since 2×12232221331² (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 (12232221371) 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, 556010050 + ... + 556010071.

It is an arithmetic number, because the mean of its divisors is an integer number (3336060366).

Almost surely, 2^12232221331 is an apocalyptic number.

12232221331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12232221331 is a deficient number, since it is larger than the sum of its proper divisors (1112020133).

12232221331 is a wasteful number, since it uses less digits than its factorization.

12232221331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112020132.

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

Adding to 12232221331 its reverse (13312223221), we get a palindrome (25544444552).

The spelling of 12232221331 in words is "twelve billion, two hundred thirty-two million, two hundred twenty-one thousand, three hundred thirty-one".