4340405420221 has 24 divisors (see below), whose sum is σ = 4707083157504. Its totient is φ = 4000464599040.

The previous prime is 4340405420177. The next prime is 4340405420227. The reversal of 4340405420221 is 1220245040434.

4340405420221 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 4340405420221 - 2¹⁵ = 4340405387453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4340405420227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 529895236 + ... + 529903426.

It is an arithmetic number, because the mean of its divisors is an integer number (196128464896).

Almost surely, 2^{4340405420221} is an apocalyptic number.

It is an amenable number.

4340405420221 is a deficient number, since it is larger than the sum of its proper divisors (366677737283).

4340405420221 is a wasteful number, since it uses less digits than its factorization.

4340405420221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12581 (or 12568 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

The spelling of 4340405420221 in words is "four trillion, three hundred forty billion, four hundred five million, four hundred twenty thousand, two hundred twenty-one".