2161201 has 8 divisors (see below), whose sum is σ = 2522880. Its totient is φ = 1812768.

The previous prime is 2161199. The next prime is 2161213. The reversal of 2161201 is 1021612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2161201 - 2¹ = 2161199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2161001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2956 + ... + 3613.

It is an arithmetic number, because the mean of its divisors is an integer number (315360).

2^2161201 is an apocalyptic number.

It is an amenable number.

2161201 is a deficient number, since it is larger than the sum of its proper divisors (361679).

2161201 is an equidigital number, since it uses as much as digits as its factorization.

2161201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6623.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2161201 is about 1470.1023773874. The cubic root of 2161201 is about 129.2900350746.

Adding to 2161201 its reverse (1021612), we get a palindrome (3182813).

The spelling of 2161201 in words is "two million, one hundred sixty-one thousand, two hundred one".