22342221 has 24 divisors (see below), whose sum is σ = 35503104. Its totient is φ = 13426560.

The previous prime is 22342217. The next prime is 22342231. The reversal of 22342221 is 12224322.

22342221 is a `hidden beast` number, since 223 + 422 + 21 = 666.

It is not a de Polignac number, because 22342221 - 2² = 22342217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22342194 and 22342203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22342211) 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, 11685 + ... + 13461.

It is an arithmetic number, because the mean of its divisors is an integer number (1479296).

Almost surely, 2^22342221 is an apocalyptic number.

It is an amenable number.

22342221 is a deficient number, since it is larger than the sum of its proper divisors (13160883).

22342221 is a wasteful number, since it uses less digits than its factorization.

22342221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921 (or 1918 counting only the distinct ones).

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

The square root of 22342221 is about 4726.7558642265. The cubic root of 22342221 is about 281.6493680462.

Adding to 22342221 its reverse (12224322), we get a palindrome (34566543).

It can be divided in two parts, 22 and 342221, that added together give a palindrome (342243).

The spelling of 22342221 in words is "twenty-two million, three hundred forty-two thousand, two hundred twenty-one".