12213023331 has 4 divisors (see below), whose sum is σ = 16284031112. Its totient is φ = 8142015552.

The previous prime is 12213023293. The next prime is 12213023393. The reversal of 12213023331 is 13332031221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13332031221 = 3 ⋅4444010407.

It is not a de Polignac number, because 12213023331 - 2⁶ = 12213023267 is a prime.

It is a super-2 number, since 2×12213023331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12213023298 and 12213023307.

It is not an unprimeable number, because it can be changed into a prime (12213023231) 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, 2035503886 + ... + 2035503891.

It is an arithmetic number, because the mean of its divisors is an integer number (4071007778).

Almost surely, 2^12213023331 is an apocalyptic number.

12213023331 is a deficient number, since it is larger than the sum of its proper divisors (4071007781).

12213023331 is an equidigital number, since it uses as much as digits as its factorization.

12213023331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4071007780.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 12213023331 its reverse (13332031221), we get a palindrome (25545054552).

The spelling of 12213023331 in words is "twelve billion, two hundred thirteen million, twenty-three thousand, three hundred thirty-one".