1001100112220 has 48 divisors (see below), whose sum is σ = 2267950536768. Its totient is φ = 368996290560.

The previous prime is 1001100112213. The next prime is 1001100112247. The reversal of 1001100112220 is 222110011001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3186536 + ... + 3486575.

It is an arithmetic number, because the mean of its divisors is an integer number (47248969516).

Almost surely, 2^{1001100112220} is an apocalyptic number.

1001100112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001100112220 is an abundant number, since it is smaller than the sum of its proper divisors (1266850424548).

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

1001100112220 is a wasteful number, since it uses less digits than its factorization.

1001100112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6673710 (or 6673708 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1001100112220 its reverse (222110011001), we get a palindrome (1223210123221).

The spelling of 1001100112220 in words is "one trillion, one billion, one hundred million, one hundred twelve thousand, two hundred twenty".