3421230305021 has 2 divisors, whose sum is σ = 3421230305022. Its totient is φ = 3421230305020.

The previous prime is 3421230304991. The next prime is 3421230305023. The reversal of 3421230305021 is 1205030321243.

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., 3415063344121 + 6166960900 = 1847989^2 + 78530^2 .

It is a cyclic number.

It is not a de Polignac number, because 3421230305021 - 2³⁴ = 3404050435837 is a prime.

Together with 3421230305023, 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 (3421230305023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710615152510 + 1710615152511.

It is an arithmetic number, because the mean of its divisors is an integer number (1710615152511).

Almost surely, 2^{3421230305021} is an apocalyptic number.

It is an amenable number.

3421230305021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3421230305021 is an equidigital number, since it uses as much as digits as its factorization.

3421230305021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 3421230305021 its reverse (1205030321243), we get a palindrome (4626260626264).

The spelling of 3421230305021 in words is "three trillion, four hundred twenty-one billion, two hundred thirty million, three hundred five thousand, twenty-one".