20000221220011 has 4 divisors (see below), whose sum is σ = 20044765143000. Its totient is φ = 19955677297024.

The previous prime is 20000221219991. The next prime is 20000221220029. The reversal of 20000221220011 is 11002212200002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20000221220011 - 2²⁷ = 20000087002283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000221219973 and 20000221220000.

It is not an unprimeable number, because it can be changed into a prime (20000221220051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22271960821 + ... + 22271961718.

It is an arithmetic number, because the mean of its divisors is an integer number (5011191285750).

Almost surely, 2^{20000221220011} is an apocalyptic number.

20000221220011 is a deficient number, since it is larger than the sum of its proper divisors (44543922989).

20000221220011 is an equidigital number, since it uses as much as digits as its factorization.

20000221220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44543922988.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20000221220011 its reverse (11002212200002), we get a palindrome (31002433420013).

The spelling of 20000221220011 in words is "twenty trillion, two hundred twenty-one million, two hundred twenty thousand, eleven".