22145123 has 16 divisors (see below), whose sum is σ = 29734656. Its totient is φ = 15927840.

The previous prime is 22145111. The next prime is 22145141. The reversal of 22145123 is 32154122.

It is a cyclic number.

It is not a de Polignac number, because 22145123 - 2⁴ = 22145107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22145095 and 22145104.

It is not an unprimeable number, because it can be changed into a prime (22145153) 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, 10061 + ... + 12062.

It is an arithmetic number, because the mean of its divisors is an integer number (1858416).

Almost surely, 2^22145123 is an apocalyptic number.

22145123 is a deficient number, since it is larger than the sum of its proper divisors (7589533).

22145123 is a wasteful number, since it uses less digits than its factorization.

22145123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22154.

The product of its digits is 480, while the sum is 20.

The square root of 22145123 is about 4705.8604951698. The cubic root of 22145123 is about 280.8187050077.

Adding to 22145123 its reverse (32154122), we get a palindrome (54299245).

It can be divided in two parts, 2214 and 5123, that added together give a palindrome (7337).

The spelling of 22145123 in words is "twenty-two million, one hundred forty-five thousand, one hundred twenty-three".