22100020123 has 4 divisors (see below), whose sum is σ = 22327855480. Its totient is φ = 21872184768.

The previous prime is 22100020093. The next prime is 22100020141. The reversal of 22100020123 is 32102000122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22100020123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22100020153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113917533 + ... + 113917726.

It is an arithmetic number, because the mean of its divisors is an integer number (5581963870).

Almost surely, 2^22100020123 is an apocalyptic number.

22100020123 is a deficient number, since it is larger than the sum of its proper divisors (227835357).

22100020123 is an equidigital number, since it uses as much as digits as its factorization.

22100020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227835356.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 22100020123 its reverse (32102000122), we get a palindrome (54202020245).

The spelling of 22100020123 in words is "twenty-two billion, one hundred million, twenty thousand, one hundred twenty-three".