20012110211 has 4 divisors (see below), whose sum is σ = 20013221424. Its totient is φ = 20010999000.

The previous prime is 20012110199. The next prime is 20012110253. The reversal of 20012110211 is 11201121002.

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 20012110211 - 2⁶ = 20012110147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20012110192 and 20012110201.

It is not an unprimeable number, because it can be changed into a prime (20012110511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528140 + ... + 564761.

It is an arithmetic number, because the mean of its divisors is an integer number (5003305356).

Almost surely, 2^20012110211 is an apocalyptic number.

20012110211 is a deficient number, since it is larger than the sum of its proper divisors (1111213).

20012110211 is a wasteful number, since it uses less digits than its factorization.

20012110211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111212.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20012110211 its reverse (11201121002), we get a palindrome (31213231213).

The spelling of 20012110211 in words is "twenty billion, twelve million, one hundred ten thousand, two hundred eleven".