2112212131 has 2 divisors, whose sum is σ = 2112212132. Its totient is φ = 2112212130.

The previous prime is 2112212119. The next prime is 2112212171. The reversal of 2112212131 is 1312122112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2112212131 - 2⁵ = 2112212099 is a prime.

It is a super-2 number, since 2×2112212131² = 8922880172687122322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2112212171) 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, 1056106065 + 1056106066.

It is an arithmetic number, because the mean of its divisors is an integer number (1056106066).

Almost surely, 2^2112212131 is an apocalyptic number.

2112212131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112212131 is an equidigital number, since it uses as much as digits as its factorization.

2112212131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 16.

The square root of 2112212131 is about 45958.8090685562. The cubic root of 2112212131 is about 1283.0566862083.

Adding to 2112212131 its reverse (1312122112), we get a palindrome (3424334243).

The spelling of 2112212131 in words is "two billion, one hundred twelve million, two hundred twelve thousand, one hundred thirty-one".