1216602115 has 8 divisors (see below), whose sum is σ = 1463409360. Its totient is φ = 970957152.

The previous prime is 1216602103. The next prime is 1216602119. The reversal of 1216602115 is 5112066121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1216602115 - 2⁷ = 1216601987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1216602115.

It is not an unprimeable number, because it can be changed into a prime (1216602119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288264 + ... + 292453.

It is an arithmetic number, because the mean of its divisors is an integer number (182926170).

Almost surely, 2^1216602115 is an apocalyptic number.

1216602115 is a deficient number, since it is larger than the sum of its proper divisors (246807245).

1216602115 is an equidigital number, since it uses as much as digits as its factorization.

1216602115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581141.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1216602115 is about 34879.8238957710. The cubic root of 1216602115 is about 1067.5368019825.

Adding to 1216602115 its reverse (5112066121), we get a palindrome (6328668236).

The spelling of 1216602115 in words is "one billion, two hundred sixteen million, six hundred two thousand, one hundred fifteen".