2012202581 has 4 divisors (see below), whose sum is σ = 2118108000. Its totient is φ = 1906297164.

The previous prime is 2012202571. The next prime is 2012202593. The reversal of 2012202581 is 1852022102.

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 a de Polignac number, because none of the positive numbers 2^k-2012202581 is a prime.

It is a super-2 number, since 2×2012202581² = 8097918453966123122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012202571) 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, 52952681 + ... + 52952718.

It is an arithmetic number, because the mean of its divisors is an integer number (529527000).

Almost surely, 2^2012202581 is an apocalyptic number.

It is an amenable number.

2012202581 is a deficient number, since it is larger than the sum of its proper divisors (105905419).

2012202581 is a wasteful number, since it uses less digits than its factorization.

2012202581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105905418.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 2012202581 is about 44857.5810872588. The cubic root of 2012202581 is about 1262.4782376538.

Adding to 2012202581 its reverse (1852022102), we get a palindrome (3864224683).

The spelling of 2012202581 in words is "two billion, twelve million, two hundred two thousand, five hundred eighty-one".