2012081 has 4 divisors (see below), whose sum is σ = 2118000. Its totient is φ = 1906164.

The previous prime is 2012057. The next prime is 2012083. The reversal of 2012081 is 1802102.

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 2012081 - 2¹⁰ = 2011057 is a prime.

It is a super-2 number, since 2×2012081² = 8096939901122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52931 + ... + 52968.

It is an arithmetic number, because the mean of its divisors is an integer number (529500).

2^2012081 is an apocalyptic number.

It is an amenable number.

2012081 is a deficient number, since it is larger than the sum of its proper divisors (105919).

2012081 is a wasteful number, since it uses less digits than its factorization.

2012081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105918.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2012081 is about 1418.4784101283. The cubic root of 2012081 is about 126.2452810052.

Adding to 2012081 its reverse (1802102), we get a palindrome (3814183).

The spelling of 2012081 in words is "two million, twelve thousand, eighty-one".