22421341021 has 4 divisors (see below), whose sum is σ = 23740243452. Its totient is φ = 21102438592.

The previous prime is 22421341013. The next prime is 22421341031. The reversal of 22421341021 is 12014312422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8119812100 + 14301528921 = 90110^2 + 119589^2 .

It is a cyclic number.

It is not a de Polignac number, because 22421341021 - 2³ = 22421341013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22421340983 and 22421341001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22421341031) 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 3 ways as a sum of consecutive naturals, for example, 659451190 + ... + 659451223.

It is an arithmetic number, because the mean of its divisors is an integer number (5935060863).

Almost surely, 2^22421341021 is an apocalyptic number.

It is an amenable number.

22421341021 is a deficient number, since it is larger than the sum of its proper divisors (1318902431).

22421341021 is a wasteful number, since it uses less digits than its factorization.

22421341021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318902430.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 22421341021 its reverse (12014312422), we get a palindrome (34435653443).

The spelling of 22421341021 in words is "twenty-two billion, four hundred twenty-one million, three hundred forty-one thousand, twenty-one".