120136611 has 16 divisors (see below), whose sum is σ = 185575424. Its totient is φ = 67708224.

The previous prime is 120136609. The next prime is 120136631. The reversal of 120136611 is 116631021.

It is not a de Polignac number, because 120136611 - 2¹ = 120136609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120136631) 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 in 15 ways as a sum of consecutive naturals, for example, 37651 + ... + 40716.

It is an arithmetic number, because the mean of its divisors is an integer number (11598464).

Almost surely, 2^120136611 is an apocalyptic number.

120136611 is a deficient number, since it is larger than the sum of its proper divisors (65438813).

120136611 is an equidigital number, since it uses as much as digits as its factorization.

120136611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78450.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 120136611 is about 10960.6847870012. The cubic root of 120136611 is about 493.4295170488.

Adding to 120136611 its reverse (116631021), we get a palindrome (236767632).

The spelling of 120136611 in words is "one hundred twenty million, one hundred thirty-six thousand, six hundred eleven".