12213022423 has 4 divisors (see below), whose sum is σ = 13957739920. Its totient is φ = 10468304928.

The previous prime is 12213022363. The next prime is 12213022441. The reversal of 12213022423 is 32422031221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12213022423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12213022394 and 12213022403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213022223) 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, 872358738 + ... + 872358751.

It is an arithmetic number, because the mean of its divisors is an integer number (3489434980).

Almost surely, 2^12213022423 is an apocalyptic number.

12213022423 is a deficient number, since it is larger than the sum of its proper divisors (1744717497).

12213022423 is an equidigital number, since it uses as much as digits as its factorization.

12213022423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744717496.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12213022423 its reverse (32422031221), we get a palindrome (44635053644).

The spelling of 12213022423 in words is "twelve billion, two hundred thirteen million, twenty-two thousand, four hundred twenty-three".