22120202123 has 4 divisors (see below), whose sum is σ = 22156053960. Its totient is φ = 22084350288.

The previous prime is 22120202119. The next prime is 22120202129. The reversal of 22120202123 is 32120202122.

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 22120202123 - 2² = 22120202119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22120202129) 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, 17924993 + ... + 17926226.

It is an arithmetic number, because the mean of its divisors is an integer number (5539013490).

Almost surely, 2^22120202123 is an apocalyptic number.

22120202123 is a deficient number, since it is larger than the sum of its proper divisors (35851837).

22120202123 is an equidigital number, since it uses as much as digits as its factorization.

22120202123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35851836.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22120202123 its reverse (32120202122), we get a palindrome (54240404245).

Subtracting 22120202123 from its reverse (32120202122), we obtain a palindrome (9999999999).

The spelling of 22120202123 in words is "twenty-two billion, one hundred twenty million, two hundred two thousand, one hundred twenty-three".