12212112813449 has 2 divisors, whose sum is σ = 12212112813450. Its totient is φ = 12212112813448.

The previous prime is 12212112813431. The next prime is 12212112813463. The reversal of 12212112813449 is 94431821121221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9741265210000 + 2470847603449 = 3121100^2 + 1571893^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212112813449 - 2⁸ = 12212112813193 is a prime.

It is not a weakly prime, because it can be changed into another prime (12212112813409) 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, 6106056406724 + 6106056406725.

It is an arithmetic number, because the mean of its divisors is an integer number (6106056406725).

Almost surely, 2^{12212112813449} is an apocalyptic number.

It is an amenable number.

12212112813449 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212112813449 is an equidigital number, since it uses as much as digits as its factorization.

12212112813449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 41.

The spelling of 12212112813449 in words is "twelve trillion, two hundred twelve billion, one hundred twelve million, eight hundred thirteen thousand, four hundred forty-nine".