2112312197 has 2 divisors, whose sum is σ = 2112312198. Its totient is φ = 2112312196.

The previous prime is 2112312187. The next prime is 2112312229. The reversal of 2112312197 is 7912132112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1859851876 + 252460321 = 43126^2 + 15889^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112312197 - 2²⁶ = 2045203333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112312107) 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, 1056156098 + 1056156099.

It is an arithmetic number, because the mean of its divisors is an integer number (1056156099).

Almost surely, 2^2112312197 is an apocalyptic number.

It is an amenable number.

2112312197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112312197 is an equidigital number, since it uses as much as digits as its factorization.

2112312197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 29.

The square root of 2112312197 is about 45959.8977044118. The cubic root of 2112312197 is about 1283.0769474818.

The spelling of 2112312197 in words is "two billion, one hundred twelve million, three hundred twelve thousand, one hundred ninety-seven".