21443110422 has 16 divisors (see below), whose sum is σ = 42927116400. Its totient is φ = 7140887552.

The previous prime is 21443110411. The next prime is 21443110489. The reversal of 21443110422 is 22401134412.

It is a junction number, because it is equal to n+sod(n) for n = 21443110392 and 21443110401.

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, 1697163 + ... + 1709750.

It is an arithmetic number, because the mean of its divisors is an integer number (2682944775).

Almost surely, 2^21443110422 is an apocalyptic number.

21443110422 is an abundant number, since it is smaller than the sum of its proper divisors (21484005978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21443110422 is a wasteful number, since it uses less digits than its factorization.

21443110422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407967.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21443110422 its reverse (22401134412), we get a palindrome (43844244834).

The spelling of 21443110422 in words is "twenty-one billion, four hundred forty-three million, one hundred ten thousand, four hundred twenty-two".