201020211 has 20 divisors (see below), whose sum is σ = 343188912. Its totient is φ = 114868368.

The previous prime is 201020201. The next prime is 201020233. The reversal of 201020211 is 112020102.

It is not a de Polignac number, because 201020211 - 2⁶ = 201020147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 201020193 and 201020202.

It is not an unprimeable number, because it can be changed into a prime (201020201) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 176700 + ... + 177833.

Almost surely, 2^201020211 is an apocalyptic number.

201020211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201020211 is a deficient number, since it is larger than the sum of its proper divisors (142168701).

201020211 is an equidigital number, since it uses as much as digits as its factorization.

201020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354552 (or 354543 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 201020211 is about 14178.1596478527. The cubic root of 201020211 is about 585.7962333232.

Adding to 201020211 its reverse (112020102), we get a palindrome (313040313).

The spelling of 201020211 in words is "two hundred one million, twenty thousand, two hundred eleven".