1123812211 has 16 divisors (see below), whose sum is σ = 1189798848. Its totient is φ = 1060214400.

The previous prime is 1123812203. The next prime is 1123812257. The reversal of 1123812211 is 1122183211.

It is a cyclic number.

It is not a de Polignac number, because 1123812211 - 2³ = 1123812203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123812311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156741 + ... + 163753.

It is an arithmetic number, because the mean of its divisors is an integer number (74362428).

Almost surely, 2^1123812211 is an apocalyptic number.

1123812211 is a deficient number, since it is larger than the sum of its proper divisors (65986637).

1123812211 is an equidigital number, since it uses as much as digits as its factorization.

1123812211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7182.

The product of its digits is 192, while the sum is 22.

The square root of 1123812211 is about 33523.3084733592. The cubic root of 1123812211 is about 1039.6757528998.

Adding to 1123812211 its reverse (1122183211), we get a palindrome (2245995422).

The spelling of 1123812211 in words is "one billion, one hundred twenty-three million, eight hundred twelve thousand, two hundred eleven".