201215441 has 4 divisors (see below), whose sum is σ = 229960512. Its totient is φ = 172470372.

The previous prime is 201215419. The next prime is 201215459. The reversal of 201215441 is 144512102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201215441 is a prime.

It is a super-3 number, since 3×201215441³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201215471) 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, 14372525 + ... + 14372538.

It is an arithmetic number, because the mean of its divisors is an integer number (57490128).

Almost surely, 2^201215441 is an apocalyptic number.

It is an amenable number.

201215441 is a deficient number, since it is larger than the sum of its proper divisors (28745071).

201215441 is an equidigital number, since it uses as much as digits as its factorization.

201215441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28745070.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 201215441 is about 14185.0428621136. The cubic root of 201215441 is about 585.9858129256.

Adding to 201215441 its reverse (144512102), we get a palindrome (345727543).

The spelling of 201215441 in words is "two hundred one million, two hundred fifteen thousand, four hundred forty-one".