20212110111 has 16 divisors (see below), whose sum is σ = 28417600640. Its totient is φ = 12743166240.

The previous prime is 20212110109. The next prime is 20212110161. The reversal of 20212110111 is 11101121202.

It is not a de Polignac number, because 20212110111 - 2¹ = 20212110109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212110161) 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 15 ways as a sum of consecutive naturals, for example, 277960 + ... + 343053.

It is an arithmetic number, because the mean of its divisors is an integer number (1776100040).

Almost surely, 2^20212110111 is an apocalyptic number.

20212110111 is a deficient number, since it is larger than the sum of its proper divisors (8205490529).

20212110111 is a wasteful number, since it uses less digits than its factorization.

20212110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621606.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20212110111 its reverse (11101121202), we get a palindrome (31313231313).

The spelling of 20212110111 in words is "twenty billion, two hundred twelve million, one hundred ten thousand, one hundred eleven".