201216265 has 4 divisors (see below), whose sum is σ = 241459524. Its totient is φ = 160973008.

The previous prime is 201216193. The next prime is 201216271. The reversal of 201216265 is 562612102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 158457744 + 42758521 = 12588^2 + 6539^2 .

It is a cyclic number.

It is not a de Polignac number, because 201216265 - 2¹⁵ = 201183497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20121622 + ... + 20121631.

It is an arithmetic number, because the mean of its divisors is an integer number (60364881).

Almost surely, 2^201216265 is an apocalyptic number.

It is an amenable number.

201216265 is a deficient number, since it is larger than the sum of its proper divisors (40243259).

201216265 is an equidigital number, since it uses as much as digits as its factorization.

201216265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40243258.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 201216265 is about 14185.0719067617. The cubic root of 201216265 is about 585.9866128172.

Adding to 201216265 its reverse (562612102), we get a palindrome (763828367).

The spelling of 201216265 in words is "two hundred one million, two hundred sixteen thousand, two hundred sixty-five".