23442221 has 8 divisors (see below), whose sum is σ = 26685504. Its totient is φ = 20384320.

The previous prime is 23442217. The next prime is 23442229. The reversal of 23442221 is 12224432.

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

It is not a de Polignac number, because 23442221 - 2² = 23442217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23442193 and 23442202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23442229) 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, 46076 + ... + 46581.

It is an arithmetic number, because the mean of its divisors is an integer number (3335688).

Almost surely, 2^23442221 is an apocalyptic number.

It is an amenable number.

23442221 is a deficient number, since it is larger than the sum of its proper divisors (3243283).

23442221 is a wasteful number, since it uses less digits than its factorization.

23442221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92691.

The product of its digits is 768, while the sum is 20.

The square root of 23442221 is about 4841.7167409918. The cubic root of 23442221 is about 286.1977742672.

Adding to 23442221 its reverse (12224432), we get a palindrome (35666653).

It can be divided in two parts, 23 and 442221, that added together give a palindrome (442244).

The spelling of 23442221 in words is "twenty-three million, four hundred forty-two thousand, two hundred twenty-one".