1100221321100 has 72 divisors (see below), whose sum is σ = 2647221202416. Its totient is φ = 393521760000.

The previous prime is 1100221321081. The next prime is 1100221321141. The reversal of 1100221321100 is 11231220011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8131271 + ... + 8265470.

Almost surely, 2^{1100221321100} is an apocalyptic number.

1100221321100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100221321100 is an abundant number, since it is smaller than the sum of its proper divisors (1546999881316).

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

1100221321100 is a wasteful number, since it uses less digits than its factorization.

1100221321100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16396827 (or 16396820 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1100221321100 its reverse (11231220011), we get a palindrome (1111452541111).

The spelling of 1100221321100 in words is "one trillion, one hundred billion, two hundred twenty-one million, three hundred twenty-one thousand, one hundred".