22020112123 has 4 divisors (see below), whose sum is σ = 22085454040. Its totient is φ = 21954770208.

The previous prime is 22020112097. The next prime is 22020112181. The reversal of 22020112123 is 32121102022.

It is a happy number.

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-22020112123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22020112097 and 22020112106.

It is not an unprimeable number, because it can be changed into a prime (22020112523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32670453 + ... + 32671126.

It is an arithmetic number, because the mean of its divisors is an integer number (5521363510).

Almost surely, 2^22020112123 is an apocalyptic number.

22020112123 is a deficient number, since it is larger than the sum of its proper divisors (65341917).

22020112123 is an equidigital number, since it uses as much as digits as its factorization.

22020112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65341916.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22020112123 its reverse (32121102022), we get a palindrome (54141214145).

It can be divided in two parts, 220201 and 12123, that added together give a square (232324 = 482²).

The spelling of 22020112123 in words is "twenty-two billion, twenty million, one hundred twelve thousand, one hundred twenty-three".