1218488126201 has 2 divisors, whose sum is σ = 1218488126202. Its totient is φ = 1218488126200.

The previous prime is 1218488126131. The next prime is 1218488126213. The reversal of 1218488126201 is 1026218848121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 975659940025 + 242828186176 = 987755^2 + 492776^2 .

It is a cyclic number.

It is not a de Polignac number, because 1218488126201 - 2¹⁸ = 1218487864057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1218488176201) 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, 609244063100 + 609244063101.

It is an arithmetic number, because the mean of its divisors is an integer number (609244063101).

Almost surely, 2^{1218488126201} is an apocalyptic number.

It is an amenable number.

1218488126201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1218488126201 is an equidigital number, since it uses as much as digits as its factorization.

1218488126201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98304, while the sum is 44.

The spelling of 1218488126201 in words is "one trillion, two hundred eighteen billion, four hundred eighty-eight million, one hundred twenty-six thousand, two hundred one".