12213211331 has 8 divisors (see below), whose sum is σ = 12390256224. Its totient is φ = 12036306240.

The previous prime is 12213211327. The next prime is 12213211333. The reversal of 12213211331 is 13311231221.

It is a happy number.

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

It is not a de Polignac number, because 12213211331 - 2² = 12213211327 is a prime.

It is a super-2 number, since 2×12213211331² (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 (12213211333) 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, 147911 + ... + 215183.

It is an arithmetic number, because the mean of its divisors is an integer number (1548782028).

Almost surely, 2^12213211331 is an apocalyptic number.

12213211331 is a deficient number, since it is larger than the sum of its proper divisors (177044893).

12213211331 is an equidigital number, since it uses as much as digits as its factorization.

12213211331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69901.

The product of its digits is 216, while the sum is 20.

Adding to 12213211331 its reverse (13311231221), we get a palindrome (25524442552).

The spelling of 12213211331 in words is "twelve billion, two hundred thirteen million, two hundred eleven thousand, three hundred thirty-one".