22223421 has 24 divisors (see below), whose sum is σ = 35971104. Its totient is φ = 13102560.

The previous prime is 22223419. The next prime is 22223429. The reversal of 22223421 is 12432222.

22223421 is a `hidden beast` number, since 22 + 223 + 421 = 666.

It is not a de Polignac number, because 22223421 - 2¹ = 22223419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22223394 and 22223403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22223429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 630 + ... + 6696.

It is an arithmetic number, because the mean of its divisors is an integer number (1498796).

Almost surely, 2^22223421 is an apocalyptic number.

It is an amenable number.

22223421 is a deficient number, since it is larger than the sum of its proper divisors (13747683).

22223421 is a wasteful number, since it uses less digits than its factorization.

22223421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6121 (or 6118 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 22223421 is about 4714.1723557800. The cubic root of 22223421 is about 281.1492771180.

Adding to 22223421 its reverse (12432222), we get a palindrome (34655643).

The spelling of 22223421 in words is "twenty-two million, two hundred twenty-three thousand, four hundred twenty-one".