22127505 has 32 divisors (see below), whose sum is σ = 36495360. Its totient is φ = 11444160.

The previous prime is 22127491. The next prime is 22127507. The reversal of 22127505 is 50572122.

It is not a de Polignac number, because 22127505 - 2¹⁴ = 22111121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22127507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84004 + ... + 84266.

It is an arithmetic number, because the mean of its divisors is an integer number (1140480).

Almost surely, 2^22127505 is an apocalyptic number.

It is an amenable number.

22127505 is a deficient number, since it is larger than the sum of its proper divisors (14367855).

22127505 is a wasteful number, since it uses less digits than its factorization.

22127505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 22127505 is about 4703.9882015158. The cubic root of 22127505 is about 280.7442149188.

Adding to 22127505 its reverse (50572122), we get a palindrome (72699627).

The spelling of 22127505 in words is "twenty-two million, one hundred twenty-seven thousand, five hundred five".