22221331423 has 4 divisors (see below), whose sum is σ = 22221631960. Its totient is φ = 22221030888.

The previous prime is 22221331411. The next prime is 22221331439. The reversal of 22221331423 is 32413312222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22221331423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221331523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46708 + ... + 215926.

It is an arithmetic number, because the mean of its divisors is an integer number (5555407990).

Almost surely, 2^22221331423 is an apocalyptic number.

22221331423 is a deficient number, since it is larger than the sum of its proper divisors (300537).

22221331423 is a wasteful number, since it uses less digits than its factorization.

22221331423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300536.

The product of its digits is 3456, while the sum is 25.

Adding to 22221331423 its reverse (32413312222), we get a palindrome (54634643645).

The spelling of 22221331423 in words is "twenty-two billion, two hundred twenty-one million, three hundred thirty-one thousand, four hundred twenty-three".