2129201 has 4 divisors (see below), whose sum is σ = 2139504. Its totient is φ = 2118900.

The previous prime is 2129177. The next prime is 2129203. The reversal of 2129201 is 1029212.

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 2129201 - 2¹⁰ = 2128177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 2129201.

It is not an unprimeable number, because it can be changed into a prime (2129203) 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, 4835 + ... + 5256.

It is an arithmetic number, because the mean of its divisors is an integer number (534876).

2^2129201 is an apocalyptic number.

It is an amenable number.

2129201 is a deficient number, since it is larger than the sum of its proper divisors (10303).

2129201 is a wasteful number, since it uses less digits than its factorization.

2129201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10302.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 2129201 is about 1459.1781933678. The cubic root of 2129201 is about 128.6487449721.

The spelling of 2129201 in words is "two million, one hundred twenty-nine thousand, two hundred one".