22024420421 has 4 divisors (see below), whose sum is σ = 22046035200. Its totient is φ = 22002805644.

The previous prime is 22024420409. The next prime is 22024420423. The reversal of 22024420421 is 12402442022.

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.

It is a cyclic number.

It is not a de Polignac number, because 22024420421 - 2⁶ = 22024420357 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 (22024420423) 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, 10805861 + ... + 10807898.

It is an arithmetic number, because the mean of its divisors is an integer number (5511508800).

Almost surely, 2^22024420421 is an apocalyptic number.

It is an amenable number.

22024420421 is a deficient number, since it is larger than the sum of its proper divisors (21614779).

22024420421 is a wasteful number, since it uses less digits than its factorization.

22024420421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21614778.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 22024420421 its reverse (12402442022), we get a palindrome (34426862443).

The spelling of 22024420421 in words is "twenty-two billion, twenty-four million, four hundred twenty thousand, four hundred twenty-one".