1200501115 has 16 divisors (see below), whose sum is σ = 1609898976. Its totient is φ = 851795200.

The previous prime is 1200501101. The next prime is 1200501163. The reversal of 1200501115 is 5111050021.

It is not a de Polignac number, because 1200501115 - 2⁵ = 1200501083 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263932 + ... + 268441.

It is an arithmetic number, because the mean of its divisors is an integer number (100618686).

Almost surely, 2^1200501115 is an apocalyptic number.

1200501115 is a deficient number, since it is larger than the sum of its proper divisors (409397861).

1200501115 is a wasteful number, since it uses less digits than its factorization.

1200501115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532430.

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

The square root of 1200501115 is about 34648.2483684241. The cubic root of 1200501115 is about 1062.8064691940.

Adding to 1200501115 its reverse (5111050021), we get a palindrome (6311551136).

The spelling of 1200501115 in words is "one billion, two hundred million, five hundred one thousand, one hundred fifteen".