22120523 has 4 divisors (see below), whose sum is σ = 22130520. Its totient is φ = 22110528.

The previous prime is 22120517. The next prime is 22120531. The reversal of 22120523 is 32502122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22120523 - 2⁴ = 22120507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22120513) 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, 38 + ... + 6651.

It is an arithmetic number, because the mean of its divisors is an integer number (5532630).

Almost surely, 2^22120523 is an apocalyptic number.

22120523 is a deficient number, since it is larger than the sum of its proper divisors (9997).

22120523 is an equidigital number, since it uses as much as digits as its factorization.

22120523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9996.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 22120523 is about 4703.2460067490. The cubic root of 22120523 is about 280.7146836136.

Adding to 22120523 its reverse (32502122), we get a palindrome (54622645).

The spelling of 22120523 in words is "twenty-two million, one hundred twenty thousand, five hundred twenty-three".