813216201 has 12 divisors (see below), whose sum is σ = 1261315152. Its totient is φ = 464694888.

The previous prime is 813216163. The next prime is 813216227. The reversal of 813216201 is 102612318.

It is not a de Polignac number, because 813216201 - 2⁷ = 813216073 is a prime.

It is a super-2 number, since 2×813216201² = 1322641179137744802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (813216401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2765895 + ... + 2766188.

It is an arithmetic number, because the mean of its divisors is an integer number (105109596).

Almost surely, 2^813216201 is an apocalyptic number.

It is an amenable number.

813216201 is a deficient number, since it is larger than the sum of its proper divisors (448098951).

813216201 is a wasteful number, since it uses less digits than its factorization.

813216201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5532100 (or 5532093 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 813216201 is about 28516.9458568059. The cubic root of 813216201 is about 933.4018859370.

Adding to 813216201 its reverse (102612318), we get a palindrome (915828519).

The spelling of 813216201 in words is "eight hundred thirteen million, two hundred sixteen thousand, two hundred one".