2012291 has 4 divisors (see below), whose sum is σ = 2027784. Its totient is φ = 1996800.

The previous prime is 2012287. The next prime is 2012299. The reversal of 2012291 is 1922102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2012291 - 2² = 2012287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012299) 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 3 ways as a sum of consecutive naturals, for example, 7550 + ... + 7811.

It is an arithmetic number, because the mean of its divisors is an integer number (506946).

2^2012291 is an apocalyptic number.

2012291 is a deficient number, since it is larger than the sum of its proper divisors (15493).

2012291 is a wasteful number, since it uses less digits than its factorization.

2012291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15492.

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

The square root of 2012291 is about 1418.5524311776. The cubic root of 2012291 is about 126.2496729070.

Adding to 2012291 its reverse (1922102), we get a palindrome (3934393).

The spelling of 2012291 in words is "two million, twelve thousand, two hundred ninety-one".