3423021430021 has 2 divisors, whose sum is σ = 3423021430022. Its totient is φ = 3423021430020.

The previous prime is 3423021430019. The next prime is 3423021430057. The reversal of 3423021430021 is 1200341203243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2845058092900 + 577963337121 = 1686730^2 + 760239^2 .

It is a cyclic number.

It is not a de Polignac number, because 3423021430021 - 2¹ = 3423021430019 is a prime.

Together with 3423021430019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3423021430321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1711510715010 + 1711510715011.

It is an arithmetic number, because the mean of its divisors is an integer number (1711510715011).

Almost surely, 2^{3423021430021} is an apocalyptic number.

It is an amenable number.

3423021430021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3423021430021 is an equidigital number, since it uses as much as digits as its factorization.

3423021430021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 3423021430021 its reverse (1200341203243), we get a palindrome (4623362633264).

The spelling of 3423021430021 in words is "three trillion, four hundred twenty-three billion, twenty-one million, four hundred thirty thousand, twenty-one".