2172022005 has 16 divisors (see below), whose sum is σ = 3475866240. Its totient is φ = 1158201408.

The previous prime is 2172021967. The next prime is 2172022009. The reversal of 2172022005 is 5002202712.

It is a happy number.

It is not a de Polignac number, because 2172022005 - 2⁸ = 2172021749 is a prime.

It is a super-4 number, since 4×2172022005⁴ (a number of 38 digits) contains 4444 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172022009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108576 + ... + 127014.

It is an arithmetic number, because the mean of its divisors is an integer number (217241640).

Almost surely, 2^2172022005 is an apocalyptic number.

It is an amenable number.

2172022005 is a deficient number, since it is larger than the sum of its proper divisors (1303844235).

2172022005 is a wasteful number, since it uses less digits than its factorization.

2172022005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26300.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2172022005 is about 46604.9568715603. The cubic root of 2172022005 is about 1295.0545844426.

Adding to 2172022005 its reverse (5002202712), we get a palindrome (7174224717).

The spelling of 2172022005 in words is "two billion, one hundred seventy-two million, twenty-two thousand, five".