4215204315421 has 8 divisors (see below), whose sum is σ = 4636408053888. Its totient is φ = 3832003921900.

The previous prime is 4215204315397. The next prime is 4215204315499. The reversal of 4215204315421 is 1245134025124.

4215204315421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4215204315421 - 2⁷ = 4215204315293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4215204355421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1583471365 + ... + 1583474026.

It is an arithmetic number, because the mean of its divisors is an integer number (579551006736).

Almost surely, 2^{4215204315421} is an apocalyptic number.

It is an amenable number.

4215204315421 is a deficient number, since it is larger than the sum of its proper divisors (421203738467).

4215204315421 is an equidigital number, since it uses as much as digits as its factorization.

4215204315421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166945424 (or 3166945402 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The spelling of 4215204315421 in words is "four trillion, two hundred fifteen billion, two hundred four million, three hundred fifteen thousand, four hundred twenty-one".