12121021112287 has 2 divisors, whose sum is σ = 12121021112288. Its totient is φ = 12121021112286.

The previous prime is 12121021112159. The next prime is 12121021112329. The reversal of 12121021112287 is 78221112012121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12121021112287 - 2⁷ = 12121021112159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12181021112287) 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, 6060510556143 + 6060510556144.

It is an arithmetic number, because the mean of its divisors is an integer number (6060510556144).

Almost surely, 2^{12121021112287} is an apocalyptic number.

12121021112287 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121021112287 is an equidigital number, since it uses as much as digits as its factorization.

12121021112287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 31.

The spelling of 12121021112287 in words is "twelve trillion, one hundred twenty-one billion, twenty-one million, one hundred twelve thousand, two hundred eighty-seven".