3212402021 has 2 divisors, whose sum is σ = 3212402022. Its totient is φ = 3212402020.

The previous prime is 3212402009. The next prime is 3212402023. The reversal of 3212402021 is 1202042123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2869744900 + 342657121 = 53570^2 + 18511^2 .

It is a cyclic number.

It is not a de Polignac number, because 3212402021 - 2¹⁸ = 3212139877 is a prime.

Together with 3212402023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3212402023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606201010 + 1606201011.

It is an arithmetic number, because the mean of its divisors is an integer number (1606201011).

Almost surely, 2^3212402021 is an apocalyptic number.

It is an amenable number.

3212402021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3212402021 is an equidigital number, since it uses as much as digits as its factorization.

3212402021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 3212402021 is about 56678.0559034976. The cubic root of 3212402021 is about 1475.5138718575.

Adding to 3212402021 its reverse (1202042123), we get a palindrome (4414444144).

The spelling of 3212402021 in words is "three billion, two hundred twelve million, four hundred two thousand, twenty-one".