22120405 has 8 divisors (see below), whose sum is σ = 26918784. Its totient is φ = 17446800.

The previous prime is 22120393. The next prime is 22120433. The reversal of 22120405 is 50402122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22120405 - 2⁷ = 22120277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 30801 + ... + 31510.

It is an arithmetic number, because the mean of its divisors is an integer number (3364848).

Almost surely, 2^22120405 is an apocalyptic number.

It is an amenable number.

22120405 is a deficient number, since it is larger than the sum of its proper divisors (4798379).

22120405 is an equidigital number, since it uses as much as digits as its factorization.

22120405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62387.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 22120405 is about 4703.2334622045. The cubic root of 22120405 is about 280.7141844634.

Adding to 22120405 its reverse (50402122), we get a palindrome (72522527).

The spelling of 22120405 in words is "twenty-two million, one hundred twenty thousand, four hundred five".