22200123 has 16 divisors (see below), whose sum is σ = 33334272. Its totient is φ = 13020000.

The previous prime is 22200119. The next prime is 22200131. The reversal of 22200123 is 32100222.

It is not a de Polignac number, because 22200123 - 2² = 22200119 is a prime.

It is a super-2 number, since 2×22200123² = 985690922430258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22200099 and 22200108.

It is not an unprimeable number, because it can be changed into a prime (22200173) 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, 9828 + ... + 11873.

It is an arithmetic number, because the mean of its divisors is an integer number (2083392).

Almost surely, 2^22200123 is an apocalyptic number.

22200123 is a deficient number, since it is larger than the sum of its proper divisors (11134149).

22200123 is a wasteful number, since it uses less digits than its factorization.

22200123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21746.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 22200123 is about 4711.7006483859. The cubic root of 22200123 is about 281.0509948273.

Adding to 22200123 its reverse (32100222), we get a palindrome (54300345).

Subtracting 22200123 from its reverse (32100222), we obtain a palindrome (9900099).

The spelling of 22200123 in words is "twenty-two million, two hundred thousand, one hundred twenty-three".