22322421 has 12 divisors (see below), whose sum is σ = 35174880. Its totient is φ = 13528680.

The previous prime is 22322371. The next prime is 22322429. The reversal of 22322421 is 12422322.

22322421 is a `hidden beast` number, since 223 + 22 + 421 = 666.

It is not a de Polignac number, because 22322421 - 2¹⁵ = 22289653 is a prime.

It is a super-3 number, since 3×22322421³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22322394 and 22322403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22322429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112641 + ... + 112838.

It is an arithmetic number, because the mean of its divisors is an integer number (2931240).

Almost surely, 2^22322421 is an apocalyptic number.

It is an amenable number.

22322421 is a deficient number, since it is larger than the sum of its proper divisors (12852459).

22322421 is a wasteful number, since it uses less digits than its factorization.

22322421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225496 (or 225493 counting only the distinct ones).

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

The square root of 22322421 is about 4724.6609402157. The cubic root of 22322421 is about 281.5661428725.

Adding to 22322421 its reverse (12422322), we get a palindrome (34744743).

Subtracting from 22322421 its reverse (12422322), we obtain a palindrome (9900099).

The spelling of 22322421 in words is "twenty-two million, three hundred twenty-two thousand, four hundred twenty-one".