1216056106 has 8 divisors (see below), whose sum is σ = 1853987364. Its totient is φ = 598060320.

The previous prime is 1216056047. The next prime is 1216056109. The reversal of 1216056106 is 6016506121.

It can be written as a sum of positive squares in 2 ways, for example, as 1208188081 + 7868025 = 34759^2 + 2805^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1216056109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4983715 + ... + 4983958.

Almost surely, 2^1216056106 is an apocalyptic number.

1216056106 is a deficient number, since it is larger than the sum of its proper divisors (637931258).

1216056106 is an equidigital number, since it uses as much as digits as its factorization.

1216056106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9967736.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1216056106 is about 34871.9960139938. The cubic root of 1216056106 is about 1067.3770751730.

The spelling of 1216056106 in words is "one billion, two hundred sixteen million, fifty-six thousand, one hundred six".