3213203121 has 32 divisors (see below), whose sum is σ = 4847904000. Its totient is φ = 2102855040.

The previous prime is 3213203093. The next prime is 3213203129. The reversal of 3213203121 is 1213023123.

3213203121 is a `hidden beast` number, since 32 + 1 + 320 + 312 + 1 = 666.

It is not a de Polignac number, because 3213203121 - 2⁹ = 3213202609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3213203094 and 3213203103.

It is not an unprimeable number, because it can be changed into a prime (3213203129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 984925 + ... + 988181.

It is an arithmetic number, because the mean of its divisors is an integer number (151497000).

Almost surely, 2^3213203121 is an apocalyptic number.

It is an amenable number.

3213203121 is a deficient number, since it is larger than the sum of its proper divisors (1634700879).

3213203121 is a wasteful number, since it uses less digits than its factorization.

3213203121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926 (or 3920 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 3213203121 is about 56685.1225719765. The cubic root of 3213203121 is about 1475.6365148633.

Adding to 3213203121 its reverse (1213023123), we get a palindrome (4426226244).

The spelling of 3213203121 in words is "three billion, two hundred thirteen million, two hundred three thousand, one hundred twenty-one".