2118801 has 4 divisors (see below), whose sum is σ = 2825072. Its totient is φ = 1412532.

The previous prime is 2118799. The next prime is 2118803. The reversal of 2118801 is 1088112.

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 an interprime number because it is at equal distance from previous prime (2118799) and next prime (2118803).

It is not a de Polignac number, because 2118801 - 2¹ = 2118799 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2118803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353131 + ... + 353136.

It is an arithmetic number, because the mean of its divisors is an integer number (706268).

2^2118801 is an apocalyptic number.

It is an amenable number.

2118801 is a deficient number, since it is larger than the sum of its proper divisors (706271).

2118801 is an equidigital number, since it uses as much as digits as its factorization.

2118801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706270.

The product of its (nonzero) digits is 128, while the sum is 21.

The square root of 2118801 is about 1455.6101813329. The cubic root of 2118801 is about 128.4389430696.

The spelling of 2118801 in words is "two million, one hundred eighteen thousand, eight hundred one".