120000002121187 has 2 divisors, whose sum is σ = 120000002121188. Its totient is φ = 120000002121186.

The previous prime is 120000002121163. The next prime is 120000002121323. The reversal of 120000002121187 is 781121200000021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120000002121187 is a prime.

It is not a weakly prime, because it can be changed into another prime (120000002124187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60000001060593 + 60000001060594.

It is an arithmetic number, because the mean of its divisors is an integer number (60000001060594).

Almost surely, 2^{120000002121187} is an apocalyptic number.

120000002121187 is a deficient number, since it is larger than the sum of its proper divisors (1).

120000002121187 is an equidigital number, since it uses as much as digits as its factorization.

120000002121187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 25.

The spelling of 120000002121187 in words is "one hundred twenty trillion, two million, one hundred twenty-one thousand, one hundred eighty-seven".