1211113233 has 12 divisors (see below), whose sum is σ = 1908421008. Its totient is φ = 734007960.

The previous prime is 1211113217. The next prime is 1211113259. The reversal of 1211113233 is 3323111121.

It is not a de Polignac number, because 1211113233 - 2⁴ = 1211113217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1211112233) 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 11 ways as a sum of consecutive naturals, for example, 6116635 + ... + 6116832.

It is an arithmetic number, because the mean of its divisors is an integer number (159035084).

Almost surely, 2^1211113233 is an apocalyptic number.

It is an amenable number.

1211113233 is a deficient number, since it is larger than the sum of its proper divisors (697307775).

1211113233 is a wasteful number, since it uses less digits than its factorization.

1211113233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12233484 (or 12233481 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1211113233 is about 34801.0521823694. The cubic root of 1211113233 is about 1065.9289309711.

Adding to 1211113233 its reverse (3323111121), we get a palindrome (4534224354).

It can be divided in two parts, 1211113 and 233, that added together give a triangular number (1211346 = T₁₅₅₆).

The spelling of 1211113233 in words is "one billion, two hundred eleven million, one hundred thirteen thousand, two hundred thirty-three".