1099201 has 4 divisors (see below), whose sum is σ = 1104004. Its totient is φ = 1094400.

The previous prime is 1099199. The next prime is 1099223. The reversal of 1099201 is 1029901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1029901 = 997 ⋅1033.

It can be written as a sum of positive squares in 2 ways, for example, as 602176 + 497025 = 776^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 1099201 - 2¹ = 1099199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1099261) 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, 2040 + ... + 2521.

It is an arithmetic number, because the mean of its divisors is an integer number (276001).

2^1099201 is an apocalyptic number.

It is an amenable number.

1099201 is a deficient number, since it is larger than the sum of its proper divisors (4803).

1099201 is an equidigital number, since it uses as much as digits as its factorization.

1099201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4802.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1099201 is about 1048.4278706711. The cubic root of 1099201 is about 103.2030118004.

The spelling of 1099201 in words is "one million, ninety-nine thousand, two hundred one".