23022217 has 4 divisors (see below), whose sum is σ = 23233540. Its totient is φ = 22810896.

The previous prime is 23022211. The next prime is 23022221. The reversal of 23022217 is 71222032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6245001 + 16777216 = 2499^2 + 4096^2 .

It is a cyclic number.

It is not a de Polignac number, because 23022217 - 2²³ = 14633609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23022194 and 23022203.

It is not an unprimeable number, because it can be changed into a prime (23022211) 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 3 ways as a sum of consecutive naturals, for example, 105498 + ... + 105715.

It is an arithmetic number, because the mean of its divisors is an integer number (5808385).

Almost surely, 2^23022217 is an apocalyptic number.

It is an amenable number.

23022217 is a deficient number, since it is larger than the sum of its proper divisors (211323).

23022217 is a wasteful number, since it uses less digits than its factorization.

23022217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211322.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 23022217 is about 4798.1472465943. The cubic root of 23022217 is about 284.4782369125.

Adding to 23022217 its reverse (71222032), we get a palindrome (94244249).

The spelling of 23022217 in words is "twenty-three million, twenty-two thousand, two hundred seventeen".