1211162113 has 8 divisors (see below), whose sum is σ = 1384456832. Its totient is φ = 1037935296.

The previous prime is 1211162081. The next prime is 1211162179. The reversal of 1211162113 is 3112611121.

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 1211162113 - 2⁵ = 1211162081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211142113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29881 + ... + 57577.

It is an arithmetic number, because the mean of its divisors is an integer number (173057104).

Almost surely, 2^1211162113 is an apocalyptic number.

It is an amenable number.

1211162113 is a deficient number, since it is larger than the sum of its proper divisors (173294719).

1211162113 is an equidigital number, since it uses as much as digits as its factorization.

1211162113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33951.

The product of its digits is 72, while the sum is 19.

The square root of 1211162113 is about 34801.7544529008. The cubic root of 1211162113 is about 1065.9432709199.

Adding to 1211162113 its reverse (3112611121), we get a palindrome (4323773234).

The spelling of 1211162113 in words is "one billion, two hundred eleven million, one hundred sixty-two thousand, one hundred thirteen".