20000040443221 has 16 divisors (see below), whose sum is σ = 20110279972608. Its totient is φ = 19890130478400.

The previous prime is 20000040443219. The next prime is 20000040443231. The reversal of 20000040443221 is 12234404000002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20000040443221 - 2¹ = 20000040443219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000040443192 and 20000040443201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000040443231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272491690 + ... + 272565076.

It is an arithmetic number, because the mean of its divisors is an integer number (1256892498288).

Almost surely, 2^{20000040443221} is an apocalyptic number.

It is an amenable number.

20000040443221 is a deficient number, since it is larger than the sum of its proper divisors (110239529387).

20000040443221 is a wasteful number, since it uses less digits than its factorization.

20000040443221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75612.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20000040443221 its reverse (12234404000002), we get a palindrome (32234444443223).

The spelling of 20000040443221 in words is "twenty trillion, forty million, four hundred forty-three thousand, two hundred twenty-one".