101205115 has 16 divisors (see below), whose sum is σ = 139461120. Its totient is φ = 69729120.

The previous prime is 101205113. The next prime is 101205127. The reversal of 101205115 is 511502101.

It is not a de Polignac number, because 101205115 - 2¹ = 101205113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101205113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47379 + ... + 49468.

It is an arithmetic number, because the mean of its divisors is an integer number (8716320).

Almost surely, 2^101205115 is an apocalyptic number.

101205115 is a deficient number, since it is larger than the sum of its proper divisors (38256005).

101205115 is a wasteful number, since it uses less digits than its factorization.

101205115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96882.

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 101205115 is about 10060.0752979289. The cubic root of 101205115 is about 466.0159925621.

Adding to 101205115 its reverse (511502101), we get a palindrome (612707216).

The spelling of 101205115 in words is "one hundred one million, two hundred five thousand, one hundred fifteen".