120220993 has 2 divisors, whose sum is σ = 120220994. Its totient is φ = 120220992.

The previous prime is 120220973. The next prime is 120221021. The reversal of 120220993 is 399022021.

It is an a-pointer prime, because the next prime (120221021) can be obtained adding 120220993 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93934864 + 26286129 = 9692^2 + 5127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120220993 is a prime.

It is not a weakly prime, because it can be changed into another prime (120220943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110496 + 60110497.

It is an arithmetic number, because the mean of its divisors is an integer number (60110497).

Almost surely, 2^120220993 is an apocalyptic number.

It is an amenable number.

120220993 is a deficient number, since it is larger than the sum of its proper divisors (1).

120220993 is an equidigital number, since it uses as much as digits as its factorization.

120220993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 120220993 is about 10964.5334146055. The cubic root of 120220993 is about 493.5450156319.

The spelling of 120220993 in words is "one hundred twenty million, two hundred twenty thousand, nine hundred ninety-three".