2081121 has 16 divisors (see below), whose sum is σ = 3202944. Its totient is φ = 1177344.

The previous prime is 2081099. The next prime is 2081129. The reversal of 2081121 is 1211802.

2081121 = T₆ + T₇ + ... + T₂₃₁.

It is not a de Polignac number, because 2081121 - 2⁹ = 2080609 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2081121.

It is not an unprimeable number, because it can be changed into a prime (2081129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1935 + ... + 2811.

It is an arithmetic number, because the mean of its divisors is an integer number (200184).

2^2081121 is an apocalyptic number.

2081121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2081121 is a deficient number, since it is larger than the sum of its proper divisors (1121823).

2081121 is a wasteful number, since it uses less digits than its factorization.

2081121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 2081121 is about 1442.6090946615. The cubic root of 2081121 is about 127.6730138694.

Adding to 2081121 its reverse (1211802), we get a palindrome (3292923).

The spelling of 2081121 in words is "two million, eighty-one thousand, one hundred twenty-one".