20440042222 has 16 divisors (see below), whose sum is σ = 31284807552. Its totient is φ = 10012344160.

The previous prime is 20440042141. The next prime is 20440042229. The reversal of 20440042222 is 22224004402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20440042193 and 20440042202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440042229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70654 + ... + 214177.

It is an arithmetic number, because the mean of its divisors is an integer number (1955300472).

Almost surely, 2^20440042222 is an apocalyptic number.

20440042222 is a deficient number, since it is larger than the sum of its proper divisors (10844765330).

20440042222 is a wasteful number, since it uses less digits than its factorization.

20440042222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285563.

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 20440042222 its reverse (22224004402), we get a palindrome (42664046624).

The spelling of 20440042222 in words is "twenty billion, four hundred forty million, forty-two thousand, two hundred twenty-two".