22113450021 has 16 divisors (see below), whose sum is σ = 31757334336. Its totient is φ = 13606267776.

The previous prime is 22113450013. The next prime is 22113450041. The reversal of 22113450021 is 12005431122.

It is not a de Polignac number, because 22113450021 - 2³ = 22113450013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22113450021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22113450001) 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 15 ways as a sum of consecutive naturals, for example, 251746 + ... + 328028.

It is an arithmetic number, because the mean of its divisors is an integer number (1984833396).

Almost surely, 2^22113450021 is an apocalyptic number.

It is an amenable number.

22113450021 is a deficient number, since it is larger than the sum of its proper divisors (9643884315).

22113450021 is a wasteful number, since it uses less digits than its factorization.

22113450021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83732.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 22113450021 its reverse (12005431122), we get a palindrome (34118881143).

The spelling of 22113450021 in words is "twenty-two billion, one hundred thirteen million, four hundred fifty thousand, twenty-one".