12213303331 has 4 divisors (see below), whose sum is σ = 12219020632. Its totient is φ = 12207586032.

The previous prime is 12213303259. The next prime is 12213303391. The reversal of 12213303331 is 13330331221.

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 12213303331 - 2⁷ = 12213303203 is a prime.

It is a super-2 number, since 2×12213303331² (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 (12213303391) 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, 2855445 + ... + 2859718.

It is an arithmetic number, because the mean of its divisors is an integer number (3054755158).

Almost surely, 2^12213303331 is an apocalyptic number.

12213303331 is a deficient number, since it is larger than the sum of its proper divisors (5717301).

12213303331 is an equidigital number, since it uses as much as digits as its factorization.

12213303331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5717300.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 12213303331 its reverse (13330331221), we get a palindrome (25543634552).

The spelling of 12213303331 in words is "twelve billion, two hundred thirteen million, three hundred three thousand, three hundred thirty-one".