22122405 has 24 divisors (see below), whose sum is σ = 38814048. Its totient is φ = 11654496.

The previous prime is 22122391. The next prime is 22122409. The reversal of 22122405 is 50422122.

It is not a de Polignac number, because 22122405 - 2⁶ = 22122341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122409) 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 23 ways as a sum of consecutive naturals, for example, 774 + ... + 6696.

It is an arithmetic number, because the mean of its divisors is an integer number (1617252).

Almost surely, 2^22122405 is an apocalyptic number.

It is an amenable number.

22122405 is a deficient number, since it is larger than the sum of its proper divisors (16691643).

22122405 is a wasteful number, since it uses less digits than its factorization.

22122405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6017 (or 6014 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 22122405 is about 4703.4460770801. The cubic root of 22122405 is about 280.7226443966.

Adding to 22122405 its reverse (50422122), we get a palindrome (72544527).

The spelling of 22122405 in words is "twenty-two million, one hundred twenty-two thousand, four hundred five".