2112012251 has 2 divisors, whose sum is σ = 2112012252. Its totient is φ = 2112012250.

The previous prime is 2112012223. The next prime is 2112012277. The reversal of 2112012251 is 1522102112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112012251 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2112012151) 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 as a sum of consecutive naturals, namely, 1056006125 + 1056006126.

It is an arithmetic number, because the mean of its divisors is an integer number (1056006126).

Almost surely, 2^2112012251 is an apocalyptic number.

2112012251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112012251 is an equidigital number, since it uses as much as digits as its factorization.

2112012251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 2112012251 is about 45956.6344611961. The cubic root of 2112012251 is about 1283.0162127702.

Adding to 2112012251 its reverse (1522102112), we get a palindrome (3634114363).

The spelling of 2112012251 in words is "two billion, one hundred twelve million, twelve thousand, two hundred fifty-one".