20000220021211 has 4 divisors (see below), whose sum is σ = 20645388409024. Its totient is φ = 19355051633400.

The previous prime is 20000220021139. The next prime is 20000220021227. The reversal of 20000220021211 is 11212002200002.

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 20000220021211 - 2¹³ = 20000220013019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000220021191 and 20000220021200.

It is not an unprimeable number, because it can be changed into a prime (20000220021241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322584193860 + ... + 322584193921.

It is an arithmetic number, because the mean of its divisors is an integer number (5161347102256).

Almost surely, 2^{20000220021211} is an apocalyptic number.

20000220021211 is a deficient number, since it is larger than the sum of its proper divisors (645168387813).

20000220021211 is an equidigital number, since it uses as much as digits as its factorization.

20000220021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645168387812.

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

Adding to 20000220021211 its reverse (11212002200002), we get a palindrome (31212222221213).

The spelling of 20000220021211 in words is "twenty trillion, two hundred twenty million, twenty-one thousand, two hundred eleven".