100001121112220 has 24 divisors (see below), whose sum is σ = 210048037007424. Its totient is φ = 39991746983616.

The previous prime is 100001121112199. The next prime is 100001121112247. The reversal of 100001121112220 is 22211121100001.

It is a junction number, because it is equal to n+sod(n) for n = 100001121112195 and 100001121112204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543747092 + ... + 543930971.

It is an arithmetic number, because the mean of its divisors is an integer number (8752001541976).

Almost surely, 2^{100001121112220} is an apocalyptic number.

100001121112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100001121112220 is an abundant number, since it is smaller than the sum of its proper divisors (110046915895204).

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

100001121112220 is a wasteful number, since it uses less digits than its factorization.

100001121112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087682669 (or 1087682667 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 100001121112220 its reverse (22211121100001), we get a palindrome (122212242212221).

The spelling of 100001121112220 in words is "one hundred trillion, one billion, one hundred twenty-one million, one hundred twelve thousand, two hundred twenty".