3321210010021 has 2 divisors, whose sum is σ = 3321210010022. Its totient is φ = 3321210010020.

The previous prime is 3321210009989. The next prime is 3321210010031. The reversal of 3321210010021 is 1200100121233.

3321210010021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3066473788225 + 254736221796 = 1751135^2 + 504714^2 .

It is a cyclic number.

It is not a de Polignac number, because 3321210010021 - 2⁵ = 3321210009989 is a prime.

It is a super-2 number, since 2×3321210010021² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3321210009977 and 3321210010004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3321210010031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1660605005010 + 1660605005011.

It is an arithmetic number, because the mean of its divisors is an integer number (1660605005011).

Almost surely, 2^{3321210010021} is an apocalyptic number.

It is an amenable number.

3321210010021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3321210010021 is an equidigital number, since it uses as much as digits as its factorization.

3321210010021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 3321210010021 its reverse (1200100121233), we get a palindrome (4521310131254).

The spelling of 3321210010021 in words is "three trillion, three hundred twenty-one billion, two hundred ten million, ten thousand, twenty-one".