201020103211 has 4 divisors (see below), whose sum is σ = 202300486192. Its totient is φ = 199739720232.

The previous prime is 201020103197. The next prime is 201020103217. The reversal of 201020103211 is 112301020102.

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 201020103211 - 2¹⁹ = 201019578923 is a prime.

It is a super-2 number, since 2×201020103211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201020103191 and 201020103200.

It is not an unprimeable number, because it can be changed into a prime (201020103217) 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, 640191255 + ... + 640191568.

It is an arithmetic number, because the mean of its divisors is an integer number (50575121548).

Almost surely, 2^201020103211 is an apocalyptic number.

201020103211 is a deficient number, since it is larger than the sum of its proper divisors (1280382981).

201020103211 is a wasteful number, since it uses less digits than its factorization.

201020103211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280382980.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 201020103211 its reverse (112301020102), we get a palindrome (313321123313).

The spelling of 201020103211 in words is "two hundred one billion, twenty million, one hundred three thousand, two hundred eleven".