100221011002020 has 48 divisors (see below), whose sum is σ = 280619628932160. Its totient is φ = 26725526921856.

The previous prime is 100221011001989. The next prime is 100221011002093. The reversal of 100221011002020 is 20200110122001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 100221011001987 and 100221011002005.

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 15 ways as a sum of consecutive naturals, for example, 20758191 + ... + 25126569.

It is an arithmetic number, because the mean of its divisors is an integer number (5846242269420).

Almost surely, 2^{100221011002020} is an apocalyptic number.

100221011002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100221011002020 is an abundant number, since it is smaller than the sum of its proper divisors (180398617930140).

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

100221011002020 is a wasteful number, since it uses less digits than its factorization.

100221011002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4750764 (or 4750762 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100221011002020 its reverse (20200110122001), we get a palindrome (120421121124021).

The spelling of 100221011002020 in words is "one hundred trillion, two hundred twenty-one billion, eleven million, two thousand, twenty".