3212021 has 2 divisors, whose sum is σ = 3212022. Its totient is φ = 3212020.

The previous prime is 3212009. The next prime is 3212023. The reversal of 3212021 is 1202123.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3204100 + 7921 = 1790^2 + 89^2 .

It is a cyclic number.

It is not a de Polignac number, because 3212021 - 2¹⁴ = 3195637 is a prime.

Together with 3212023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3211993 and 3212011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3212023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606010 + 1606011.

It is an arithmetic number, because the mean of its divisors is an integer number (1606011).

Almost surely, 2^3212021 is an apocalyptic number.

It is an amenable number.

3212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3212021 is an equidigital number, since it uses as much as digits as its factorization.

3212021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 3212021 is about 1792.2112040717. The cubic root of 3212021 is about 147.5455532958.

Adding to 3212021 its reverse (1202123), we get a palindrome (4414144).

The spelling of 3212021 in words is "three million, two hundred twelve thousand, twenty-one".