20011311030211 has 4 divisors (see below), whose sum is σ = 20309987314312. Its totient is φ = 19712634746112.

The previous prime is 20011311030203. The next prime is 20011311030223. The reversal of 20011311030211 is 11203011311002.

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 20011311030211 - 2³ = 20011311030203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011311000211) 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, 149338141950 + ... + 149338142083.

It is an arithmetic number, because the mean of its divisors is an integer number (5077496828578).

Almost surely, 2^{20011311030211} is an apocalyptic number.

20011311030211 is a deficient number, since it is larger than the sum of its proper divisors (298676284101).

20011311030211 is an equidigital number, since it uses as much as digits as its factorization.

20011311030211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298676284100.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 20011311030211 its reverse (11203011311002), we get a palindrome (31214322341213).

The spelling of 20011311030211 in words is "twenty trillion, eleven billion, three hundred eleven million, thirty thousand, two hundred eleven".