21443043505022 has 16 divisors (see below), whose sum is σ = 32376084749952. Its totient is φ = 10651201044120.

The previous prime is 21443043505019. The next prime is 21443043505043. The reversal of 21443043505022 is 22050534034412.

It is a happy number.

It is a super-2 number, since 2×21443043505022² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46216058 + ... + 46677725.

It is an arithmetic number, because the mean of its divisors is an integer number (2023505296872).

Almost surely, 2^{21443043505022} is an apocalyptic number.

21443043505022 is a deficient number, since it is larger than the sum of its proper divisors (10933041244930).

21443043505022 is a wasteful number, since it uses less digits than its factorization.

21443043505022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92894543.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 21443043505022 its reverse (22050534034412), we get a palindrome (43493577539434).

The spelling of 21443043505022 in words is "twenty-one trillion, four hundred forty-three billion, forty-three million, five hundred five thousand, twenty-two".