22120453 has 4 divisors (see below), whose sum is σ = 22834048. Its totient is φ = 21406860.

The previous prime is 22120433. The next prime is 22120459. The reversal of 22120453 is 35402122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22120453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22120453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120459) 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, 356751 + ... + 356812.

It is an arithmetic number, because the mean of its divisors is an integer number (5708512).

Almost surely, 2^22120453 is an apocalyptic number.

It is an amenable number.

22120453 is a deficient number, since it is larger than the sum of its proper divisors (713595).

22120453 is an equidigital number, since it uses as much as digits as its factorization.

22120453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713594.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 22120453 is about 4703.2385650741. The cubic root of 22120453 is about 280.7143875078.

Adding to 22120453 its reverse (35402122), we get a palindrome (57522575).

The spelling of 22120453 in words is "twenty-two million, one hundred twenty thousand, four hundred fifty-three".