3201212021 has 4 divisors (see below), whose sum is σ = 3658528032. Its totient is φ = 2743896012.

The previous prime is 3201212011. The next prime is 3201212033. The reversal of 3201212021 is 1202121023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3201212021 - 2⁶ = 3201211957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3201211987 and 3201212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201212011) 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, 228657995 + ... + 228658008.

It is an arithmetic number, because the mean of its divisors is an integer number (914632008).

Almost surely, 2^3201212021 is an apocalyptic number.

It is an amenable number.

3201212021 is a deficient number, since it is larger than the sum of its proper divisors (457316011).

3201212021 is an equidigital number, since it uses as much as digits as its factorization.

3201212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457316010.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 3201212021 is about 56579.2543340755. The cubic root of 3201212021 is about 1473.7986227865.

Adding to 3201212021 its reverse (1202121023), we get a palindrome (4403333044).

The spelling of 3201212021 in words is "three billion, two hundred one million, two hundred twelve thousand, twenty-one".