2112420131 has 2 divisors, whose sum is σ = 2112420132. Its totient is φ = 2112420130.

The previous prime is 2112420127. The next prime is 2112420137. The reversal of 2112420131 is 1310242112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2112420131 - 2² = 2112420127 is a prime.

It is a super-2 number, since 2×2112420131² = 8924637619708114322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2112420137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056210065 + 1056210066.

It is an arithmetic number, because the mean of its divisors is an integer number (1056210066).

Almost surely, 2^2112420131 is an apocalyptic number.

2112420131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112420131 is an equidigital number, since it uses as much as digits as its factorization.

2112420131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2112420131 is about 45961.0719087360. The cubic root of 2112420131 is about 1283.0988011435.

Adding to 2112420131 its reverse (1310242112), we get a palindrome (3422662243).

The spelling of 2112420131 in words is "two billion, one hundred twelve million, four hundred twenty thousand, one hundred thirty-one".