120231109 has 2 divisors, whose sum is σ = 120231110. Its totient is φ = 120231108.

The previous prime is 120231091. The next prime is 120231121. The reversal of 120231109 is 901132021.

Together with previous prime (120231091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75742209 + 44488900 = 8703^2 + 6670^2 .

It is an emirp because it is prime and its reverse (901132021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120231109 - 2⁵ = 120231077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120231169) 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, 60115554 + 60115555.

It is an arithmetic number, because the mean of its divisors is an integer number (60115555).

Almost surely, 2^120231109 is an apocalyptic number.

It is an amenable number.

120231109 is a deficient number, since it is larger than the sum of its proper divisors (1).

120231109 is an equidigital number, since it uses as much as digits as its factorization.

120231109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 120231109 is about 10964.9947104410. The cubic root of 120231109 is about 493.5588583649.

The spelling of 120231109 in words is "one hundred twenty million, two hundred thirty-one thousand, one hundred nine".