2012122131 has 4 divisors (see below), whose sum is σ = 2682829512. Its totient is φ = 1341414752.

The previous prime is 2012122129. The next prime is 2012122169. The reversal of 2012122131 is 1312212102.

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 2012122131 - 2¹ = 2012122129 is a prime.

It is a super-2 number, since 2×2012122131² = 8097270940119962322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2012122131.

It is not an unprimeable number, because it can be changed into a prime (2012122171) 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, 335353686 + ... + 335353691.

It is an arithmetic number, because the mean of its divisors is an integer number (670707378).

Almost surely, 2^2012122131 is an apocalyptic number.

2012122131 is a deficient number, since it is larger than the sum of its proper divisors (670707381).

2012122131 is an equidigital number, since it uses as much as digits as its factorization.

2012122131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670707380.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2012122131 is about 44856.6843513874. The cubic root of 2012122131 is about 1262.4614123552.

Adding to 2012122131 its reverse (1312212102), we get a palindrome (3324334233).

The spelling of 2012122131 in words is "two billion, twelve million, one hundred twenty-two thousand, one hundred thirty-one".