20440221422 has 16 divisors (see below), whose sum is σ = 32469844032. Its totient is φ = 9617160960.

The previous prime is 20440221407. The next prime is 20440221433. The reversal of 20440221422 is 22412204402.

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, 142922 + ... + 247602.

It is an arithmetic number, because the mean of its divisors is an integer number (2029365252).

Almost surely, 2^20440221422 is an apocalyptic number.

20440221422 is a deficient number, since it is larger than the sum of its proper divisors (12029622610).

20440221422 is a wasteful number, since it uses less digits than its factorization.

20440221422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110443.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 20440221422 its reverse (22412204402), we get a palindrome (42852425824).

The spelling of 20440221422 in words is "twenty billion, four hundred forty million, two hundred twenty-one thousand, four hundred twenty-two".