22005141421 has 4 divisors (see below), whose sum is σ = 22009877344. Its totient is φ = 22000405500.

The previous prime is 22005141409. The next prime is 22005141451. The reversal of 22005141421 is 12414150022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22005141421 - 2²¹ = 22003044269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22005141392 and 22005141401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22005141451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2360985 + ... + 2370286.

It is an arithmetic number, because the mean of its divisors is an integer number (5502469336).

Almost surely, 2^22005141421 is an apocalyptic number.

It is an amenable number.

22005141421 is a deficient number, since it is larger than the sum of its proper divisors (4735923).

22005141421 is an equidigital number, since it uses as much as digits as its factorization.

22005141421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4735922.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 22005141421 its reverse (12414150022), we get a palindrome (34419291443).

The spelling of 22005141421 in words is "twenty-two billion, five million, one hundred forty-one thousand, four hundred twenty-one".