2021021624424 has 64 divisors (see below), whose sum is σ = 5522706360000. Its totient is φ = 611227550720.

The previous prime is 2021021624423. The next prime is 2021021624449. The reversal of 2021021624424 is 4244261201202.

It is a junction number, because it is equal to n+sod(n) for n = 2021021624391 and 2021021624400.

It is not an unprimeable number, because it can be changed into a prime (2021021624423) 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 15 ways as a sum of consecutive naturals, for example, 7385649 + ... + 7654400.

It is an arithmetic number, because the mean of its divisors is an integer number (86292286875).

Almost surely, 2^{2021021624424} is an apocalyptic number.

2021021624424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2021021624424 is an abundant number, since it is smaller than the sum of its proper divisors (3501684735576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021021624424 is a wasteful number, since it uses less digits than its factorization.

2021021624424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15040578 (or 15040574 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 2021021624424 its reverse (4244261201202), we get a palindrome (6265282825626).

The spelling of 2021021624424 in words is "two trillion, twenty-one billion, twenty-one million, six hundred twenty-four thousand, four hundred twenty-four".