2021204320422 has 96 divisors (see below), whose sum is σ = 4920619269888. Its totient is φ = 541956262848.

The previous prime is 2021204320417. The next prime is 2021204320483. The reversal of 2021204320422 is 2240234021202.

It is a junction number, because it is equal to n+sod(n) for n = 2021204320392 and 2021204320401.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 319333 + ... + 2035775.

It is an arithmetic number, because the mean of its divisors is an integer number (51256450728).

Almost surely, 2^{2021204320422} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021204320422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2460309634944).

2021204320422 is an abundant number, since it is smaller than the sum of its proper divisors (2899414949466).

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

2021204320422 is a wasteful number, since it uses less digits than its factorization.

2021204320422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716554 (or 1716531 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 2021204320422 its reverse (2240234021202), we get a palindrome (4261438341624).

The spelling of 2021204320422 in words is "two trillion, twenty-one billion, two hundred four million, three hundred twenty thousand, four hundred twenty-two".