20001000220211 has 4 divisors (see below), whose sum is σ = 20021598573624. Its totient is φ = 19980401866800.

The previous prime is 20001000220207. The next prime is 20001000220213. The reversal of 20001000220211 is 11202200010002.

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 20001000220211 - 2² = 20001000220207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20001000220192 and 20001000220201.

It is not an unprimeable number, because it can be changed into a prime (20001000220213) 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, 10299175250 + ... + 10299177191.

It is an arithmetic number, because the mean of its divisors is an integer number (5005399643406).

Almost surely, 2^{20001000220211} is an apocalyptic number.

20001000220211 is a deficient number, since it is larger than the sum of its proper divisors (20598353413).

20001000220211 is an equidigital number, since it uses as much as digits as its factorization.

20001000220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20598353412.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20001000220211 its reverse (11202200010002), we get a palindrome (31203200230213).

The spelling of 20001000220211 in words is "twenty trillion, one billion, two hundred twenty thousand, two hundred eleven".