22430221 has 8 divisors (see below), whose sum is σ = 25533504. Its totient is φ = 19504320.

The previous prime is 22430209. The next prime is 22430227. The reversal of 22430221 is 12203422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22430221 - 2¹¹ = 22428173 is a prime.

It is a super-2 number, since 2×22430221² = 1006229628217682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22430195 and 22430204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22430227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44076 + ... + 44581.

It is an arithmetic number, because the mean of its divisors is an integer number (3191688).

Almost surely, 2^22430221 is an apocalyptic number.

It is an amenable number.

22430221 is a deficient number, since it is larger than the sum of its proper divisors (3103283).

22430221 is a wasteful number, since it uses less digits than its factorization.

22430221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88691.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 22430221 is about 4736.0554261959. The cubic root of 22430221 is about 282.0186639895.

Adding to 22430221 its reverse (12203422), we get a palindrome (34633643).

The spelling of 22430221 in words is "twenty-two million, four hundred thirty thousand, two hundred twenty-one".