3221412021 has 12 divisors (see below), whose sum is σ = 4655895660. Its totient is φ = 2146341120.

The previous prime is 3221411969. The next prime is 3221412031. The reversal of 3221412021 is 1202141223.

It is a happy number.

3221412021 is a `hidden beast` number, since 322 + 141 + 202 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 796932900 + 2424479121 = 28230^2 + 49239^2 .

It is not a de Polignac number, because 3221412021 - 2⁹ = 3221411509 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3221411985 and 3221412003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221412031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89340 + ... + 120101.

It is an arithmetic number, because the mean of its divisors is an integer number (387991305).

Almost surely, 2^3221412021 is an apocalyptic number.

It is an amenable number.

3221412021 is a deficient number, since it is larger than the sum of its proper divisors (1434483639).

3221412021 is a wasteful number, since it uses less digits than its factorization.

3221412021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211156 (or 211153 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3221412021 is about 56757.4842730014. The cubic root of 3221412021 is about 1476.8920690311.

Adding to 3221412021 its reverse (1202141223), we get a palindrome (4423553244).

The spelling of 3221412021 in words is "three billion, two hundred twenty-one million, four hundred twelve thousand, twenty-one".