22005023 has 4 divisors (see below), whose sum is σ = 22218768. Its totient is φ = 21791280.

The previous prime is 22005019. The next prime is 22005031. The reversal of 22005023 is 32050022.

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

It is a cyclic number.

It is not a de Polignac number, because 22005023 - 2² = 22005019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22004989 and 22005007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22005013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106718 + ... + 106923.

It is an arithmetic number, because the mean of its divisors is an integer number (5554692).

Almost surely, 2^22005023 is an apocalyptic number.

22005023 is a deficient number, since it is larger than the sum of its proper divisors (213745).

22005023 is a wasteful number, since it uses less digits than its factorization.

22005023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213744.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 22005023 is about 4690.9511828626. The cubic root of 22005023 is about 280.2252566603.

Adding to 22005023 its reverse (32050022), we get a palindrome (54055045).

The spelling of 22005023 in words is "twenty-two million, five thousand, twenty-three".