22122165 has 32 divisors (see below), whose sum is σ = 39062016. Its totient is φ = 10621440.

The previous prime is 22122103. The next prime is 22122169. The reversal of 22122165 is 56122122.

It is a happy number.

It is not a de Polignac number, because 22122165 - 2¹² = 22118069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122169) 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 31 ways as a sum of consecutive naturals, for example, 6612 + ... + 9378.

It is an arithmetic number, because the mean of its divisors is an integer number (1220688).

Almost surely, 2^22122165 is an apocalyptic number.

It is an amenable number.

22122165 is a deficient number, since it is larger than the sum of its proper divisors (16939851).

22122165 is a wasteful number, since it uses less digits than its factorization.

22122165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829.

The product of its digits is 480, while the sum is 21.

The square root of 22122165 is about 4703.4205638025. The cubic root of 22122165 is about 280.7216292316.

Adding to 22122165 its reverse (56122122), we get a palindrome (78244287).

The spelling of 22122165 in words is "twenty-two million, one hundred twenty-two thousand, one hundred sixty-five".