120131111 has 2 divisors, whose sum is σ = 120131112. Its totient is φ = 120131110.

The previous prime is 120131069. The next prime is 120131159. The reversal of 120131111 is 111131021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120131111 - 2²⁶ = 53022247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120131092 and 120131101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120131161) 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, 60065555 + 60065556.

It is an arithmetic number, because the mean of its divisors is an integer number (60065556).

Almost surely, 2^120131111 is an apocalyptic number.

120131111 is a deficient number, since it is larger than the sum of its proper divisors (1).

120131111 is an equidigital number, since it uses as much as digits as its factorization.

120131111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 120131111 is about 10960.4338873970. The cubic root of 120131111 is about 493.4219869997.

Adding to 120131111 its reverse (111131021), we get a palindrome (231262132).

The spelling of 120131111 in words is "one hundred twenty million, one hundred thirty-one thousand, one hundred eleven".