100111221002020 has 96 divisors (see below), whose sum is σ = 223614592185600. Its totient is φ = 37517551718400.

The previous prime is 100111221002017. The next prime is 100111221002033. The reversal of 100111221002020 is 20200122111001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69961720 + ... + 71378320.

It is an arithmetic number, because the mean of its divisors is an integer number (2329318668600).

Almost surely, 2^{100111221002020} is an apocalyptic number.

100111221002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100111221002020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111807296092800).

100111221002020 is an abundant number, since it is smaller than the sum of its proper divisors (123503371183580).

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

100111221002020 is a wasteful number, since it uses less digits than its factorization.

100111221002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417573 (or 1417571 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100111221002020 its reverse (20200122111001), we get a palindrome (120311343113021).

The spelling of 100111221002020 in words is "one hundred trillion, one hundred eleven billion, two hundred twenty-one million, two thousand, twenty".