120220181 has 2 divisors, whose sum is σ = 120220182. Its totient is φ = 120220180.

The previous prime is 120220169. The next prime is 120220183. The reversal of 120220181 is 181022021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78411025 + 41809156 = 8855^2 + 6466^2 .

It is an emirp because it is prime and its reverse (181022021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120220181 - 2⁶ = 120220117 is a prime.

It is a super-2 number, since 2×120220181² = 28905783839345522, which contains 22 as substring.

Together with 120220183, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120220183) 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, 60110090 + 60110091.

It is an arithmetic number, because the mean of its divisors is an integer number (60110091).

Almost surely, 2^120220181 is an apocalyptic number.

It is an amenable number.

120220181 is a deficient number, since it is larger than the sum of its proper divisors (1).

120220181 is an equidigital number, since it uses as much as digits as its factorization.

120220181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 120220181 is about 10964.4963860635. The cubic root of 120220181 is about 493.5439044575.

The spelling of 120220181 in words is "one hundred twenty million, two hundred twenty thousand, one hundred eighty-one".