3213121233 has 32 divisors (see below), whose sum is σ = 4953434112. Its totient is φ = 1814716800.

The previous prime is 3213121189. The next prime is 3213121253. The reversal of 3213121233 is 3321213123.

It is not a de Polignac number, because 3213121233 - 2¹⁴ = 3213104849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3213121253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 721293 + ... + 725733.

It is an arithmetic number, because the mean of its divisors is an integer number (154794816).

Almost surely, 2^3213121233 is an apocalyptic number.

It is an amenable number.

3213121233 is a deficient number, since it is larger than the sum of its proper divisors (1740312879).

3213121233 is a wasteful number, since it uses less digits than its factorization.

3213121233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4845.

The product of its digits is 648, while the sum is 21.

The square root of 3213121233 is about 56684.4002614476. The cubic root of 3213121233 is about 1475.6239792983.

Adding to 3213121233 its reverse (3321213123), we get a palindrome (6534334356).

The spelling of 3213121233 in words is "three billion, two hundred thirteen million, one hundred twenty-one thousand, two hundred thirty-three".