202020102111 has 4 divisors (see below), whose sum is σ = 269360136152. Its totient is φ = 134680068072.

The previous prime is 202020102101. The next prime is 202020102127. The reversal of 202020102111 is 111201020202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 202020102111 - 2⁶ = 202020102047 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 (202020102101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33670017016 + ... + 33670017021.

It is an arithmetic number, because the mean of its divisors is an integer number (67340034038).

Almost surely, 2^202020102111 is an apocalyptic number.

202020102111 is a deficient number, since it is larger than the sum of its proper divisors (67340034041).

202020102111 is an equidigital number, since it uses as much as digits as its factorization.

202020102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67340034040.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 202020102111 its reverse (111201020202), we get a palindrome (313221122313).

The spelling of 202020102111 in words is "two hundred two billion, twenty million, one hundred two thousand, one hundred eleven".