120205115 has 16 divisors (see below), whose sum is σ = 152947200. Its totient is φ = 90437472.

The previous prime is 120205109. The next prime is 120205117. The reversal of 120205115 is 511502021.

It is a cyclic number.

It is not a de Polignac number, because 120205115 - 2⁸ = 120204859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120205093 and 120205102.

It is not an unprimeable number, because it can be changed into a prime (120205117) 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, 8654 + ... + 17756.

It is an arithmetic number, because the mean of its divisors is an integer number (9559200).

Almost surely, 2^120205115 is an apocalyptic number.

120205115 is a deficient number, since it is larger than the sum of its proper divisors (32742085).

120205115 is a wasteful number, since it uses less digits than its factorization.

120205115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9266.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 120205115 is about 10963.8093288784. The cubic root of 120205115 is about 493.5232866127.

Adding to 120205115 its reverse (511502021), we get a palindrome (631707136).

The spelling of 120205115 in words is "one hundred twenty million, two hundred five thousand, one hundred fifteen".