3430121021 has 2 divisors, whose sum is σ = 3430121022. Its totient is φ = 3430121020.

The previous prime is 3430121017. The next prime is 3430121063. The reversal of 3430121021 is 1201210343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2105524996 + 1324596025 = 45886^2 + 36395^2 .

It is a cyclic number.

It is not a de Polignac number, because 3430121021 - 2² = 3430121017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3430127021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1715060510 + 1715060511.

It is an arithmetic number, because the mean of its divisors is an integer number (1715060511).

Almost surely, 2^3430121021 is an apocalyptic number.

It is an amenable number.

3430121021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3430121021 is an equidigital number, since it uses as much as digits as its factorization.

3430121021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3430121021 is about 58567.2350465685. The cubic root of 3430121021 is about 1508.1220196736.

Adding to 3430121021 its reverse (1201210343), we get a palindrome (4631331364).

The spelling of 3430121021 in words is "three billion, four hundred thirty million, one hundred twenty-one thousand, twenty-one".