121222110121187 has 2 divisors, whose sum is σ = 121222110121188. Its totient is φ = 121222110121186.

The previous prime is 121222110121153. The next prime is 121222110121349. The reversal of 121222110121187 is 781121011222121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121222110121187 is a prime.

It is not a weakly prime, because it can be changed into another prime (121222110121117) 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, 60611055060593 + 60611055060594.

It is an arithmetic number, because the mean of its divisors is an integer number (60611055060594).

Almost surely, 2^{121222110121187} is an apocalyptic number.

121222110121187 is a deficient number, since it is larger than the sum of its proper divisors (1).

121222110121187 is an equidigital number, since it uses as much as digits as its factorization.

121222110121187 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 32.

The spelling of 121222110121187 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred ten million, one hundred twenty-one thousand, one hundred eighty-seven".