5221542351421 has 16 divisors (see below), whose sum is σ = 5722002486720. Its totient is φ = 4725411102720.

The previous prime is 5221542351419. The next prime is 5221542351433. The reversal of 5221542351421 is 1241532451225.

It is not a de Polignac number, because 5221542351421 - 2¹ = 5221542351419 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 (5221542351461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2325565 + ... + 3981373.

It is an arithmetic number, because the mean of its divisors is an integer number (357625155420).

Almost surely, 2^{5221542351421} is an apocalyptic number.

It is an amenable number.

5221542351421 is a deficient number, since it is larger than the sum of its proper divisors (500460135299).

5221542351421 is a wasteful number, since it uses less digits than its factorization.

5221542351421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657116.

The product of its digits is 96000, while the sum is 37.

The spelling of 5221542351421 in words is "five trillion, two hundred twenty-one billion, five hundred forty-two million, three hundred fifty-one thousand, four hundred twenty-one".