22100000123 has 16 divisors (see below), whose sum is σ = 22671360000. Its totient is φ = 21537708192.

The previous prime is 22100000093. The next prime is 22100000129. The reversal of 22100000123 is 32100000122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22100000123 - 2¹² = 22099996027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22100000129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1991033 + ... + 2002101.

It is an arithmetic number, because the mean of its divisors is an integer number (1416960000).

Almost surely, 2^22100000123 is an apocalyptic number.

22100000123 is a deficient number, since it is larger than the sum of its proper divisors (571359877).

22100000123 is a wasteful number, since it uses less digits than its factorization.

22100000123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11474.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 22100000123 its reverse (32100000122), we get a palindrome (54200000245).

Subtracting 22100000123 from its reverse (32100000122), we obtain a palindrome (9999999999).

The spelling of 22100000123 in words is "twenty-two billion, one hundred million, one hundred twenty-three", and thus it is an aban number.