22024344421 has 4 divisors (see below), whose sum is σ = 22024641312. Its totient is φ = 22024047532.

The previous prime is 22024344403. The next prime is 22024344449. The reversal of 22024344421 is 12444342022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, 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-22024344421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22024344421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22024344481) 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, 69120 + ... + 220966.

It is an arithmetic number, because the mean of its divisors is an integer number (5506160328).

Almost surely, 2^22024344421 is an apocalyptic number.

It is an amenable number.

22024344421 is a deficient number, since it is larger than the sum of its proper divisors (296891).

22024344421 is a wasteful number, since it uses less digits than its factorization.

22024344421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296890.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 22024344421 its reverse (12444342022), we get a palindrome (34468686443).

The spelling of 22024344421 in words is "twenty-two billion, twenty-four million, three hundred forty-four thousand, four hundred twenty-one".