1216113170 has 16 divisors (see below), whose sum is σ = 2192562648. Its totient is φ = 485654400.

The previous prime is 1216113169. The next prime is 1216113179. The reversal of 1216113170 is 713116121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 754765729 + 461347441 = 27473^2 + 21479^2 .

It is not an unprimeable number, because it can be changed into a prime (1216113179) 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, 92381 + ... + 104720.

Almost surely, 2^1216113170 is an apocalyptic number.

1216113170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1216113170 is a deficient number, since it is larger than the sum of its proper divisors (976449478).

1216113170 is a wasteful number, since it uses less digits than its factorization.

1216113170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197725.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 1216113170 is about 34872.8141967350. The cubic root of 1216113170 is about 1067.3937706343.

Adding to 1216113170 its reverse (713116121), we get a palindrome (1929229291).

The spelling of 1216113170 in words is "one billion, two hundred sixteen million, one hundred thirteen thousand, one hundred seventy".