22100023 has 4 divisors (see below), whose sum is σ = 24109128. Its totient is φ = 20090920.

The previous prime is 22099999. The next prime is 22100041. The reversal of 22100023 is 32000122.

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 22100023 - 2¹⁷ = 21968951 is a prime.

It is a super-2 number, since 2×22100023² = 976822033201058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22099982 and 22100009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22190023) 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, 1004536 + ... + 1004557.

It is an arithmetic number, because the mean of its divisors is an integer number (6027282).

Almost surely, 2^22100023 is an apocalyptic number.

22100023 is a deficient number, since it is larger than the sum of its proper divisors (2009105).

22100023 is a wasteful number, since it uses less digits than its factorization.

22100023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009104.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 22100023 is about 4701.0661556715. The cubic root of 22100023 is about 280.6279401911.

Adding to 22100023 its reverse (32000122), we get a palindrome (54100145).

Subtracting 22100023 from its reverse (32000122), we obtain a palindrome (9900099).

The spelling of 22100023 in words is "twenty-two million, one hundred thousand, twenty-three".