1201116215 has 32 divisors (see below), whose sum is σ = 1647547776. Its totient is φ = 832757760.

The previous prime is 1201116187. The next prime is 1201116223. The reversal of 1201116215 is 5126111021.

It is not a de Polignac number, because 1201116215 - 2²⁶ = 1134007351 is a prime.

It is a Duffinian number.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 554735 + ... + 556895.

It is an arithmetic number, because the mean of its divisors is an integer number (51485868).

Almost surely, 2^1201116215 is an apocalyptic number.

1201116215 is a deficient number, since it is larger than the sum of its proper divisors (446431561).

1201116215 is a wasteful number, since it uses less digits than its factorization.

1201116215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699.

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 1201116215 is about 34657.1235823171. The cubic root of 1201116215 is about 1062.9879546953.

Adding to 1201116215 its reverse (5126111021), we get a palindrome (6327227236).

The spelling of 1201116215 in words is "one billion, two hundred one million, one hundred sixteen thousand, two hundred fifteen".