2021342324421 has 32 divisors (see below), whose sum is σ = 3175991175168. Its totient is φ = 1119357576000.

The previous prime is 2021342324399. The next prime is 2021342324471. The reversal of 2021342324421 is 1244232431202.

It is not a de Polignac number, because 2021342324421 - 2²² = 2021338130117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021342324471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4987185 + ... + 5377238.

It is an arithmetic number, because the mean of its divisors is an integer number (99249724224).

Almost surely, 2^{2021342324421} is an apocalyptic number.

2021342324421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2021342324421 is a deficient number, since it is larger than the sum of its proper divisors (1154648850747).

2021342324421 is a wasteful number, since it uses less digits than its factorization.

2021342324421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10364721.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 2021342324421 its reverse (1244232431202), we get a palindrome (3265574755623).

The spelling of 2021342324421 in words is "two trillion, twenty-one billion, three hundred forty-two million, three hundred twenty-four thousand, four hundred twenty-one".