201216270 has 32 divisors (see below), whose sum is σ = 508337280. Its totient is φ = 50833440.

The previous prime is 201216193. The next prime is 201216271. The reversal of 201216270 is 72612102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201216271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175936 + ... + 177075.

It is an arithmetic number, because the mean of its divisors is an integer number (15885540).

Almost surely, 2^201216270 is an apocalyptic number.

201216270 is an abundant number, since it is smaller than the sum of its proper divisors (307121010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201216270 is a wasteful number, since it uses less digits than its factorization.

201216270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353040.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 201216270 is about 14185.0720830033. The cubic root of 201216270 is about 585.9866176709.

Adding to 201216270 its reverse (72612102), we get a palindrome (273828372).

It can be divided in two parts, 20121 and 6270, that multiplied together give a triangular number (126158670 = T₁₅₈₈₄).

The spelling of 201216270 in words is "two hundred one million, two hundred sixteen thousand, two hundred seventy".