22172007 has 16 divisors (see below), whose sum is σ = 34731648. Its totient is φ = 12403680.

The previous prime is 22171999. The next prime is 22172027. The reversal of 22172007 is 70027122.

It is not a de Polignac number, because 22172007 - 2³ = 22171999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22172027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25413 + ... + 26270.

It is an arithmetic number, because the mean of its divisors is an integer number (2170728).

Almost surely, 2^22172007 is an apocalyptic number.

22172007 is a deficient number, since it is larger than the sum of its proper divisors (12559641).

22172007 is a wasteful number, since it uses less digits than its factorization.

22172007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51710.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 22172007 is about 4708.7160670399. The cubic root of 22172007 is about 280.9322962651.

Adding to 22172007 its reverse (70027122), we get a palindrome (92199129).

It can be divided in two parts, 2217 and 2007, that added together give a palindrome (4224).

The spelling of 22172007 in words is "twenty-two million, one hundred seventy-two thousand, seven".