20021012210211 has 4 divisors (see below), whose sum is σ = 26694682946952. Its totient is φ = 13347341473472.

The previous prime is 20021012210167. The next prime is 20021012210219. The reversal of 20021012210211 is 11201221012002.

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 20021012210211 - 2¹⁵ = 20021012177443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20021012210219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3336835368366 + ... + 3336835368371.

It is an arithmetic number, because the mean of its divisors is an integer number (6673670736738).

Almost surely, 2^{20021012210211} is an apocalyptic number.

20021012210211 is a deficient number, since it is larger than the sum of its proper divisors (6673670736741).

20021012210211 is an equidigital number, since it uses as much as digits as its factorization.

20021012210211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6673670736740.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20021012210211 its reverse (11201221012002), we get a palindrome (31222233222213).

The spelling of 20021012210211 in words is "twenty trillion, twenty-one billion, twelve million, two hundred ten thousand, two hundred eleven".