1233212213 has 8 divisors (see below), whose sum is σ = 1256183640. Its totient is φ = 1210443520.

The previous prime is 1233212171. The next prime is 1233212221. The reversal of 1233212213 is 3122123321.

It can be written as a sum of positive squares in 4 ways, for example, as 222099409 + 1011112804 = 14903^2 + 31798^2 .

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 1233212213 - 2⁸ = 1233211957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233212713) 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, 38378 + ... + 62763.

It is an arithmetic number, because the mean of its divisors is an integer number (157022955).

Almost surely, 2^1233212213 is an apocalyptic number.

It is an amenable number.

1233212213 is a deficient number, since it is larger than the sum of its proper divisors (22971427).

1233212213 is a wasteful number, since it uses less digits than its factorization.

1233212213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101367.

The product of its digits is 432, while the sum is 20.

The square root of 1233212213 is about 35117.1213655106. The cubic root of 1233212213 is about 1072.3731682960.

Adding to 1233212213 its reverse (3122123321), we get a palindrome (4355335534).

The spelling of 1233212213 in words is "one billion, two hundred thirty-three million, two hundred twelve thousand, two hundred thirteen".