22120065 has 24 divisors (see below), whose sum is σ = 41827968. Its totient is φ = 10724640.

The previous prime is 22120061. The next prime is 22120099. The reversal of 22120065 is 56002122.

It is not a de Polignac number, because 22120065 - 2² = 22120061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22120061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21849 + ... + 22838.

It is an arithmetic number, because the mean of its divisors is an integer number (1742832).

Almost surely, 2^22120065 is an apocalyptic number.

It is an amenable number.

22120065 is a deficient number, since it is larger than the sum of its proper divisors (19707903).

22120065 is a wasteful number, since it uses less digits than its factorization.

22120065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44709 (or 44706 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 22120065 is about 4703.1973167198. The cubic root of 22120065 is about 280.7127462240.

Adding to 22120065 its reverse (56002122), we get a palindrome (78122187).

The spelling of 22120065 in words is "twenty-two million, one hundred twenty thousand, sixty-five".