213720201 has 32 divisors (see below), whose sum is σ = 324851200. Its totient is φ = 140562864.

The previous prime is 213720187. The next prime is 213720217. The reversal of 213720201 is 102027312.

213720201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213720201 - 2²⁷ = 79502473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213720281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172155 + ... + 173391.

It is an arithmetic number, because the mean of its divisors is an integer number (10151600).

Almost surely, 2^213720201 is an apocalyptic number.

It is an amenable number.

213720201 is a deficient number, since it is larger than the sum of its proper divisors (111130999).

213720201 is an frugal number, since it uses more digits than its factorization.

213720201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337 (or 1319 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 213720201 is about 14619.1723773954. The cubic root of 213720201 is about 597.8816044696.

Adding to 213720201 its reverse (102027312), we get a palindrome (315747513).

The spelling of 213720201 in words is "two hundred thirteen million, seven hundred twenty thousand, two hundred one".