201020203 has 4 divisors (see below), whose sum is σ = 201767760. Its totient is φ = 200272648.

The previous prime is 201020201. The next prime is 201020233. The reversal of 201020203 is 302020102.

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 201020203 - 2¹ = 201020201 is a prime.

It is a super-2 number, since 2×201020203² = 80818244028322418, which contains 22 as substring.

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 201020203.

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 3 ways as a sum of consecutive naturals, for example, 373375 + ... + 373912.

It is an arithmetic number, because the mean of its divisors is an integer number (50441940).

Almost surely, 2^201020203 is an apocalyptic number.

201020203 is a deficient number, since it is larger than the sum of its proper divisors (747557).

201020203 is an equidigital number, since it uses as much as digits as its factorization.

201020203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747556.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 201020203 is about 14178.1593657287. The cubic root of 201020203 is about 585.7962255523.

Adding to 201020203 its reverse (302020102), we get a palindrome (503040305).

The spelling of 201020203 in words is "two hundred one million, twenty thousand, two hundred three".