2012216131 has 4 divisors (see below), whose sum is σ = 2013565392. Its totient is φ = 2010866872.

The previous prime is 2012216117. The next prime is 2012216153. The reversal of 2012216131 is 1316122102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012216131 is a prime.

It is a super-2 number, since 2×2012216131² = 8098027515713218322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012216099 and 2012216108.

It is not an unprimeable number, because it can be changed into a prime (2012216431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672391 + ... + 675376.

It is an arithmetic number, because the mean of its divisors is an integer number (503391348).

Almost surely, 2^2012216131 is an apocalyptic number.

2012216131 is a deficient number, since it is larger than the sum of its proper divisors (1349261).

2012216131 is a wasteful number, since it uses less digits than its factorization.

2012216131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349260.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2012216131 is about 44857.7321205609. The cubic root of 2012216131 is about 1262.4810714543.

Adding to 2012216131 its reverse (1316122102), we get a palindrome (3328338233).

The spelling of 2012216131 in words is "two billion, twelve million, two hundred sixteen thousand, one hundred thirty-one".