1232211133 has 4 divisors (see below), whose sum is σ = 1236596508. Its totient is φ = 1227825760.

The previous prime is 1232211109. The next prime is 1232211191. The reversal of 1232211133 is 3311122321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 901080324 + 331130809 = 30018^2 + 18197^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1232211133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1232211133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232211193) 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, 2192266 + ... + 2192827.

It is an arithmetic number, because the mean of its divisors is an integer number (309149127).

Almost surely, 2^1232211133 is an apocalyptic number.

It is an amenable number.

1232211133 is a deficient number, since it is larger than the sum of its proper divisors (4385375).

1232211133 is an equidigital number, since it uses as much as digits as its factorization.

1232211133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4385374.

The product of its digits is 216, while the sum is 19.

The square root of 1232211133 is about 35102.8650255218. The cubic root of 1232211133 is about 1072.0829176437.

Adding to 1232211133 its reverse (3311122321), we get a palindrome (4543333454).

The spelling of 1232211133 in words is "one billion, two hundred thirty-two million, two hundred eleven thousand, one hundred thirty-three".