1100021330220 has 96 divisors (see below), whose sum is σ = 3110539740672. Its totient is φ = 290437221888.

The previous prime is 1100021330189. The next prime is 1100021330281. The reversal of 1100021330220 is 220331200011.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1100021330220.

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, 41967639 + ... + 41993841.

It is an arithmetic number, because the mean of its divisors is an integer number (32401455632).

Almost surely, 2^{1100021330220} is an apocalyptic number.

1100021330220 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 1100021330220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1555269870336).

1100021330220 is an abundant number, since it is smaller than the sum of its proper divisors (2010518410452).

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

1100021330220 is a wasteful number, since it uses less digits than its factorization.

1100021330220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33111 (or 33109 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1100021330220 its reverse (220331200011), we get a palindrome (1320352530231).

The spelling of 1100021330220 in words is "one trillion, one hundred billion, twenty-one million, three hundred thirty thousand, two hundred twenty".