1216233499 has 8 divisors (see below), whose sum is σ = 1386836640. Its totient is φ = 1056637056.

The previous prime is 1216233497. The next prime is 1216233521. The reversal of 1216233499 is 9943326121.

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 1216233499 - 2¹ = 1216233497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1216233497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2751439 + ... + 2751880.

It is an arithmetic number, because the mean of its divisors is an integer number (173354580).

Almost surely, 2^1216233499 is an apocalyptic number.

1216233499 is a deficient number, since it is larger than the sum of its proper divisors (170603141).

1216233499 is a wasteful number, since it uses less digits than its factorization.

1216233499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5503349.

The product of its digits is 69984, while the sum is 40.

The square root of 1216233499 is about 34874.5394091449. The cubic root of 1216233499 is about 1067.4289740984.

The spelling of 1216233499 in words is "one billion, two hundred sixteen million, two hundred thirty-three thousand, four hundred ninety-nine".