211041042020 has 24 divisors (see below), whose sum is σ = 443408643384. Its totient is φ = 84374044416.

The previous prime is 211041042001. The next prime is 211041042029. The reversal of 211041042020 is 20240140112.

It can be written as a sum of positive squares in 4 ways, for example, as 13535460964 + 197505581056 = 116342^2 + 444416^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211041042020.

It is not an unprimeable number, because it can be changed into a prime (211041042029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2607419 + ... + 2687138.

It is an arithmetic number, because the mean of its divisors is an integer number (18475360141).

Almost surely, 2^211041042020 is an apocalyptic number.

211041042020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211041042020 is an abundant number, since it is smaller than the sum of its proper divisors (232367601364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211041042020 is a wasteful number, since it uses less digits than its factorization.

211041042020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5296559 (or 5296557 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 211041042020 its reverse (20240140112), we get a palindrome (231281182132).

The spelling of 211041042020 in words is "two hundred eleven billion, forty-one million, forty-two thousand, twenty".