2131201 has 4 divisors (see below), whose sum is σ = 2152404. Its totient is φ = 2110000.

The previous prime is 2131193. The next prime is 2131223. The reversal of 2131201 is 1021312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1382976 + 748225 = 1176^2 + 865^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131201 - 2³ = 2131193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10450 + ... + 10651.

It is an arithmetic number, because the mean of its divisors is an integer number (538101).

2^2131201 is an apocalyptic number.

It is an amenable number.

2131201 is a deficient number, since it is larger than the sum of its proper divisors (21203).

2131201 is a wasteful number, since it uses less digits than its factorization.

2131201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21202.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2131201 is about 1459.8633497694. The cubic root of 2131201 is about 128.6890131244.

Adding to 2131201 its reverse (1021312), we get a palindrome (3152513).

It can be divided in two parts, 2131 and 201, that added together give a palindrome (2332).

The spelling of 2131201 in words is "two million, one hundred thirty-one thousand, two hundred one".