20440442002220 has 48 divisors (see below), whose sum is σ = 43470702589440. Its totient is φ = 8072231304384.

The previous prime is 20440442002177. The next prime is 20440442002223. The reversal of 20440442002220 is 2220024404402.

It is a super-2 number, since 2×20440442002220² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20440442002220.

It is not an unprimeable number, because it can be changed into a prime (20440442002223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28763627 + ... + 29465693.

It is an arithmetic number, because the mean of its divisors is an integer number (905639637280).

Almost surely, 2^{20440442002220} is an apocalyptic number.

20440442002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20440442002220 is an abundant number, since it is smaller than the sum of its proper divisors (23030260587220).

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

20440442002220 is a wasteful number, since it uses less digits than its factorization.

20440442002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720582 (or 720580 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 20440442002220 its reverse (2220024404402), we get a palindrome (22660466406622).

The spelling of 20440442002220 in words is "twenty trillion, four hundred forty billion, four hundred forty-two million, two thousand, two hundred twenty".