421122322020 has 96 divisors (see below), whose sum is σ = 1225038971520. Its totient is φ = 107961441280.

The previous prime is 421122322013. The next prime is 421122322021. The reversal of 421122322020 is 20223221124.

It is not an unprimeable number, because it can be changed into a prime (421122322021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113946 + ... + 924785.

It is an arithmetic number, because the mean of its divisors is an integer number (12760822620).

Almost surely, 2^421122322020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421122322020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (612519485760).

421122322020 is an abundant number, since it is smaller than the sum of its proper divisors (803916649500).

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

421122322020 is a wasteful number, since it uses less digits than its factorization.

421122322020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039005 (or 1039003 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 421122322020 its reverse (20223221124), we get a palindrome (441345543144).

The spelling of 421122322020 in words is "four hundred twenty-one billion, one hundred twenty-two million, three hundred twenty-two thousand, twenty".