12212301858157 has 2 divisors, whose sum is σ = 12212301858158. Its totient is φ = 12212301858156.

The previous prime is 12212301858137. The next prime is 12212301858173. The reversal of 12212301858157 is 75185810321221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7990238543401 + 4222063314756 = 2826701^2 + 2054766^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12212301858157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212301858137) 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, 6106150929078 + 6106150929079.

It is an arithmetic number, because the mean of its divisors is an integer number (6106150929079).

Almost surely, 2^{12212301858157} is an apocalyptic number.

It is an amenable number.

12212301858157 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212301858157 is an equidigital number, since it uses as much as digits as its factorization.

12212301858157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 268800, while the sum is 46.

The spelling of 12212301858157 in words is "twelve trillion, two hundred twelve billion, three hundred one million, eight hundred fifty-eight thousand, one hundred fifty-seven".