215132201 has 4 divisors (see below), whose sum is σ = 218162304. Its totient is φ = 212102100.

The previous prime is 215132147. The next prime is 215132221. The reversal of 215132201 is 102231512.

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 not a de Polignac number, because 215132201 - 2¹⁰ = 215131177 is a prime.

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 215132201.

It is not an unprimeable number, because it can be changed into a prime (215132221) 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, 1514945 + ... + 1515086.

It is an arithmetic number, because the mean of its divisors is an integer number (54540576).

Almost surely, 2^215132201 is an apocalyptic number.

It is an amenable number.

215132201 is a deficient number, since it is larger than the sum of its proper divisors (3030103).

215132201 is an equidigital number, since it uses as much as digits as its factorization.

215132201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030102.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 215132201 is about 14667.3856225300. The cubic root of 215132201 is about 599.1954039316.

Adding to 215132201 its reverse (102231512), we get a palindrome (317363713).

The spelling of 215132201 in words is "two hundred fifteen million, one hundred thirty-two thousand, two hundred one".