22128124 has 6 divisors (see below), whose sum is σ = 38724224. Its totient is φ = 11064060.

The previous prime is 22128121. The next prime is 22128143. The reversal of 22128124 is 42182122.

It is a junction number, because it is equal to n+sod(n) for n = 22128095 and 22128104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22128121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2766012 + ... + 2766019.

Almost surely, 2^22128124 is an apocalyptic number.

It is an amenable number.

22128124 is a deficient number, since it is larger than the sum of its proper divisors (16596100).

22128124 is a wasteful number, since it uses less digits than its factorization.

22128124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5532035 (or 5532033 counting only the distinct ones).

The product of its digits is 512, while the sum is 22.

The square root of 22128124 is about 4704.0539962887. The cubic root of 22128124 is about 280.7468327625.

The spelling of 22128124 in words is "twenty-two million, one hundred twenty-eight thousand, one hundred twenty-four".