22102221321 has 24 divisors (see below), whose sum is σ = 33550820160. Its totient is φ = 14003158176.

The previous prime is 22102221307. The next prime is 22102221331. The reversal of 22102221321 is 12312220122.

22102221321 is a `hidden beast` number, since 22 + 102 + 221 + 321 = 666.

It is not a de Polignac number, because 22102221321 - 2¹⁵ = 22102188553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22102221294 and 22102221303.

It is not an unprimeable number, because it can be changed into a prime (22102221331) 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 23 ways as a sum of consecutive naturals, for example, 757461 + ... + 786098.

It is an arithmetic number, because the mean of its divisors is an integer number (1397950840).

Almost surely, 2^22102221321 is an apocalyptic number.

It is an amenable number.

22102221321 is a deficient number, since it is larger than the sum of its proper divisors (11448598839).

22102221321 is a wasteful number, since it uses less digits than its factorization.

22102221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543645 (or 1543642 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22102221321 its reverse (12312220122), we get a palindrome (34414441443).

The spelling of 22102221321 in words is "twenty-two billion, one hundred two million, two hundred twenty-one thousand, three hundred twenty-one".