22172106321 has 48 divisors (see below), whose sum is σ = 34383679680. Its totient is φ = 14112498240.

The previous prime is 22172106289. The next prime is 22172106331. The reversal of 22172106321 is 12360127122.

22172106321 is a `hidden beast` number, since 2 + 2 + 1 + 7 + 21 + 0 + 632 + 1 = 666.

It is not a de Polignac number, because 22172106321 - 2⁵ = 22172106289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22172106331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2440830 + ... + 2449896.

It is an arithmetic number, because the mean of its divisors is an integer number (716326660).

Almost surely, 2^22172106321 is an apocalyptic number.

It is an amenable number.

22172106321 is a deficient number, since it is larger than the sum of its proper divisors (12211573359).

22172106321 is an equidigital number, since it uses as much as digits as its factorization.

22172106321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9211 (or 9158 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The spelling of 22172106321 in words is "twenty-two billion, one hundred seventy-two million, one hundred six thousand, three hundred twenty-one".