202110020011 has 4 divisors (see below), whose sum is σ = 202134763224. Its totient is φ = 202085276800.

The previous prime is 202110020009. The next prime is 202110020033. The reversal of 202110020011 is 110020011202.

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 202110020011 - 2¹ = 202110020009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202110020011.

It is not an unprimeable number, because it can be changed into a prime (202110020051) 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, 12359350 + ... + 12375691.

It is an arithmetic number, because the mean of its divisors is an integer number (50533690806).

Almost surely, 2^202110020011 is an apocalyptic number.

202110020011 is a deficient number, since it is larger than the sum of its proper divisors (24743213).

202110020011 is an equidigital number, since it uses as much as digits as its factorization.

202110020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24743212.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 202110020011 its reverse (110020011202), we get a palindrome (312130031213).

It can be divided in two parts, 202 and 110020011, that multiplied together give a palindrome (22224042222).

The spelling of 202110020011 in words is "two hundred two billion, one hundred ten million, twenty thousand, eleven".