22123123 has 4 divisors (see below), whose sum is σ = 24134328. Its totient is φ = 20111920.

The previous prime is 22123097. The next prime is 22123133. The reversal of 22123123 is 32132122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22123123 is a prime.

It is a super-3 number, since 3×22123123³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22123097 and 22123106.

It is not an unprimeable number, because it can be changed into a prime (22123133) 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, 1005586 + ... + 1005607.

It is an arithmetic number, because the mean of its divisors is an integer number (6033582).

Almost surely, 2^22123123 is an apocalyptic number.

22123123 is a deficient number, since it is larger than the sum of its proper divisors (2011205).

22123123 is a wasteful number, since it uses less digits than its factorization.

22123123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011204.

The product of its digits is 144, while the sum is 16.

The square root of 22123123 is about 4703.5224034759. The cubic root of 22123123 is about 280.7256813883.

Adding to 22123123 its reverse (32132122), we get a palindrome (54255245).

It can be divided in two parts, 2212 and 3123, that added together give a palindrome (5335).

The spelling of 22123123 in words is "twenty-two million, one hundred twenty-three thousand, one hundred twenty-three".