201020165211 has 8 divisors (see below), whose sum is σ = 268030518784. Its totient is φ = 134011627560.

The previous prime is 201020165201. The next prime is 201020165237. The reversal of 201020165211 is 112561020102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201020165211 - 2²² = 201015970907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201020165201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170371 + ... + 656556.

It is an arithmetic number, because the mean of its divisors is an integer number (33503814848).

Almost surely, 2^201020165211 is an apocalyptic number.

201020165211 is a deficient number, since it is larger than the sum of its proper divisors (67010353573).

201020165211 is an equidigital number, since it uses as much as digits as its factorization.

201020165211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907961.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 201020165211 its reverse (112561020102), we get a palindrome (313581185313).

The spelling of 201020165211 in words is "two hundred one billion, twenty million, one hundred sixty-five thousand, two hundred eleven".