22105004421 has 16 divisors (see below), whose sum is σ = 30108089088. Its totient is φ = 14419454400.

The previous prime is 22105004419. The next prime is 22105004437. The reversal of 22105004421 is 12440050122.

It is not a de Polignac number, because 22105004421 - 2¹ = 22105004419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22105004401) 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, 605631 + ... + 641091.

It is an arithmetic number, because the mean of its divisors is an integer number (1881755568).

Almost surely, 2^22105004421 is an apocalyptic number.

It is an amenable number.

22105004421 is a deficient number, since it is larger than the sum of its proper divisors (8003084667).

22105004421 is a wasteful number, since it uses less digits than its factorization.

22105004421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39932.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 22105004421 its reverse (12440050122), we get a palindrome (34545054543).

The spelling of 22105004421 in words is "twenty-two billion, one hundred five million, four thousand, four hundred twenty-one".