120009911 has 16 divisors (see below), whose sum is σ = 141109248. Its totient is φ = 99921600.

The previous prime is 120009893. The next prime is 120009937. The reversal of 120009911 is 119900021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120009911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120009961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77006 + ... + 78548.

It is an arithmetic number, because the mean of its divisors is an integer number (8819328).

Almost surely, 2^120009911 is an apocalyptic number.

120009911 is a deficient number, since it is larger than the sum of its proper divisors (21099337).

120009911 is a wasteful number, since it uses less digits than its factorization.

120009911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 120009911 is about 10954.9035139521. The cubic root of 120009911 is about 493.2559937300.

Adding to 120009911 its reverse (119900021), we get a palindrome (239909932).

The spelling of 120009911 in words is "one hundred twenty million, nine thousand, nine hundred eleven".