20234421240221 has 16 divisors (see below), whose sum is σ = 22226374909440. Its totient is φ = 18335235259440.

The previous prime is 20234421240199. The next prime is 20234421240239. The reversal of 20234421240221 is 12204212443202.

It is a cyclic number.

It is not a de Polignac number, because 20234421240221 - 2²⁶ = 20234354131357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20234421240281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9700166 + ... + 11600088.

It is an arithmetic number, because the mean of its divisors is an integer number (1389148431840).

Almost surely, 2^{20234421240221} is an apocalyptic number.

It is an amenable number.

20234421240221 is a deficient number, since it is larger than the sum of its proper divisors (1991953669219).

20234421240221 is a wasteful number, since it uses less digits than its factorization.

20234421240221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924336.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 20234421240221 its reverse (12204212443202), we get a palindrome (32438633683423).

The spelling of 20234421240221 in words is "twenty trillion, two hundred thirty-four billion, four hundred twenty-one million, two hundred forty thousand, two hundred twenty-one".