22342021 has 16 divisors (see below), whose sum is σ = 24744384. Its totient is φ = 20047104.

The previous prime is 22342009. The next prime is 22342031. The reversal of 22342021 is 12024322.

It is a de Polignac number, because none of the positive numbers 2^k-22342021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22341986 and 22342004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22342031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98310 + ... + 98536.

It is an arithmetic number, because the mean of its divisors is an integer number (1546524).

Almost surely, 2^22342021 is an apocalyptic number.

It is an amenable number.

22342021 is a deficient number, since it is larger than the sum of its proper divisors (2402363).

22342021 is a wasteful number, since it uses less digits than its factorization.

22342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420.

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

The square root of 22342021 is about 4726.7347080199. The cubic root of 22342021 is about 281.6485276338.

Adding to 22342021 its reverse (12024322), we get a palindrome (34366343).

The spelling of 22342021 in words is "twenty-two million, three hundred forty-two thousand, twenty-one".