215201201 has 4 divisors (see below), whose sum is σ = 226527600. Its totient is φ = 203874804.

The previous prime is 215201183. The next prime is 215201227. The reversal of 215201201 is 102102512.

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 215201201 - 2⁶ = 215201137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (215201291) 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, 5663171 + ... + 5663208.

It is an arithmetic number, because the mean of its divisors is an integer number (56631900).

Almost surely, 2^215201201 is an apocalyptic number.

It is an amenable number.

215201201 is a deficient number, since it is larger than the sum of its proper divisors (11326399).

215201201 is a wasteful number, since it uses less digits than its factorization.

215201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11326398.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 215201201 is about 14669.7375913818. The cubic root of 215201201 is about 599.2594576674.

Adding to 215201201 its reverse (102102512), we get a palindrome (317303713).

The spelling of 215201201 in words is "two hundred fifteen million, two hundred one thousand, two hundred one".