22143123 has 12 divisors (see below), whose sum is σ = 32190288. Its totient is φ = 14667120.

The previous prime is 22143119. The next prime is 22143127. The reversal of 22143123 is 32134122.

It is an interprime number because it is at equal distance from previous prime (22143119) and next prime (22143127).

It is not a de Polignac number, because 22143123 - 2² = 22143119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22143096 and 22143105.

It is not an unprimeable number, because it can be changed into a prime (22143127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6423 + ... + 9248.

It is an arithmetic number, because the mean of its divisors is an integer number (2682524).

Almost surely, 2^22143123 is an apocalyptic number.

22143123 is a deficient number, since it is larger than the sum of its proper divisors (10047165).

22143123 is a wasteful number, since it uses less digits than its factorization.

22143123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15834 (or 15831 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 22143123 is about 4705.6479893847. The cubic root of 22143123 is about 280.8102508616.

Adding to 22143123 its reverse (32134122), we get a palindrome (54277245).

Subtracting 22143123 from its reverse (32134122), we obtain a palindrome (9990999).

The spelling of 22143123 in words is "twenty-two million, one hundred forty-three thousand, one hundred twenty-three".