100421322020 has 12 divisors (see below), whose sum is σ = 210884776284. Its totient is φ = 40168528800.

The previous prime is 100421322019. The next prime is 100421322049. The reversal of 100421322020 is 20223124001.

It can be written as a sum of positive squares in 2 ways, for example, as 12211134016 + 88210188004 = 110504^2 + 297002^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 100421322020.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2510533031 + ... + 2510533070.

It is an arithmetic number, because the mean of its divisors is an integer number (17573731357).

Almost surely, 2^100421322020 is an apocalyptic number.

100421322020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100421322020 is an abundant number, since it is smaller than the sum of its proper divisors (110463454264).

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

100421322020 is a wasteful number, since it uses less digits than its factorization.

100421322020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5021066110 (or 5021066108 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 100421322020 its reverse (20223124001), we get a palindrome (120644446021).

The spelling of 100421322020 in words is "one hundred billion, four hundred twenty-one million, three hundred twenty-two thousand, twenty".