120221121113909 has 2 divisors, whose sum is σ = 120221121113910. Its totient is φ = 120221121113908.

The previous prime is 120221121113897. The next prime is 120221121113923. The reversal of 120221121113909 is 909311121122021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101870607051409 + 18350514062500 = 10093097^2 + 4283750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120221121113909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120221121113309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110560556954 + 60110560556955.

It is an arithmetic number, because the mean of its divisors is an integer number (60110560556955).

Almost surely, 2^{120221121113909} is an apocalyptic number.

It is an amenable number.

120221121113909 is a deficient number, since it is larger than the sum of its proper divisors (1).

120221121113909 is an equidigital number, since it uses as much as digits as its factorization.

120221121113909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 35.

The spelling of 120221121113909 in words is "one hundred twenty trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred thirteen thousand, nine hundred nine".