22422422421 has 24 divisors (see below), whose sum is σ = 37342368960. Its totient is φ = 12699421056.

The previous prime is 22422422411. The next prime is 22422422423. The reversal of 22422422421 is 12422422422.

It is not a de Polignac number, because 22422422421 - 2⁷ = 22422422293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22422422423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1567711 + ... + 1581948.

It is an arithmetic number, because the mean of its divisors is an integer number (1555932040).

Almost surely, 2^22422422421 is an apocalyptic number.

22422422421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22422422421 is a deficient number, since it is larger than the sum of its proper divisors (14919946539).

22422422421 is a wasteful number, since it uses less digits than its factorization.

22422422421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149785 (or 3149782 counting only the distinct ones).

The product of its digits is 8192, while the sum is 27.

Adding to 22422422421 its reverse (12422422422), we get a palindrome (34844844843).

Subtracting from 22422422421 its reverse (12422422422), we obtain a palindrome (9999999999).

The spelling of 22422422421 in words is "twenty-two billion, four hundred twenty-two million, four hundred twenty-two thousand, four hundred twenty-one".