2112312421897 has 2 divisors, whose sum is σ = 2112312421898. Its totient is φ = 2112312421896.

The previous prime is 2112312421861. The next prime is 2112312422053. The reversal of 2112312421897 is 7981242132112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1346855412681 + 765457009216 = 1160541^2 + 874904^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112312421897 - 2³⁹ = 1562556608009 is a prime.

It is not a weakly prime, because it can be changed into another prime (2112312421837) 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, 1056156210948 + 1056156210949.

It is an arithmetic number, because the mean of its divisors is an integer number (1056156210949).

Almost surely, 2^{2112312421897} is an apocalyptic number.

It is an amenable number.

2112312421897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112312421897 is an equidigital number, since it uses as much as digits as its factorization.

2112312421897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 43.

The spelling of 2112312421897 in words is "two trillion, one hundred twelve billion, three hundred twelve million, four hundred twenty-one thousand, eight hundred ninety-seven".