2012021131 has 24 divisors (see below), whose sum is σ = 2220649200. Its totient is φ = 1815770880.

The previous prime is 2012021069. The next prime is 2012021147. The reversal of 2012021131 is 1311202102.

It is not a de Polignac number, because 2012021131 - 2¹⁹ = 2011496843 is a prime.

It is a super-2 number, since 2×2012021131² = 8096458063181038322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012021171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4364241 + ... + 4364701.

It is an arithmetic number, because the mean of its divisors is an integer number (92527050).

Almost surely, 2^2012021131 is an apocalyptic number.

2012021131 is a deficient number, since it is larger than the sum of its proper divisors (208628069).

2012021131 is an equidigital number, since it uses as much as digits as its factorization.

2012021131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2012021131 is about 44855.5585295736. The cubic root of 2012021131 is about 1262.4402885983.

Adding to 2012021131 its reverse (1311202102), we get a palindrome (3323223233).

The spelling of 2012021131 in words is "two billion, twelve million, twenty-one thousand, one hundred thirty-one".