22042123523 has 4 divisors (see below), whose sum is σ = 25190998320. Its totient is φ = 18893248728.

The previous prime is 22042123513. The next prime is 22042123541. The reversal of 22042123523 is 32532124022.

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

It is a cyclic number.

It is not a de Polignac number, because 22042123523 - 2¹⁰ = 22042122499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22042123492 and 22042123501.

It is not an unprimeable number, because it can be changed into a prime (22042123513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1574437388 + ... + 1574437401.

It is an arithmetic number, because the mean of its divisors is an integer number (6297749580).

Almost surely, 2^22042123523 is an apocalyptic number.

22042123523 is a deficient number, since it is larger than the sum of its proper divisors (3148874797).

22042123523 is an equidigital number, since it uses as much as digits as its factorization.

22042123523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148874796.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 22042123523 its reverse (32532124022), we get a palindrome (54574247545).

The spelling of 22042123523 in words is "twenty-two billion, forty-two million, one hundred twenty-three thousand, five hundred twenty-three".