110001221100 has 72 divisors (see below), whose sum is σ = 353633563920. Its totient is φ = 29333658240.

The previous prime is 110001221081. The next prime is 110001221129. The reversal of 110001221100 is 1122100011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

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, 20367897 + ... + 20373296.

Almost surely, 2^110001221100 is an apocalyptic number.

110001221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

110001221100 is an abundant number, since it is smaller than the sum of its proper divisors (243632342820).

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

110001221100 is a wasteful number, since it uses less digits than its factorization.

110001221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40741216 (or 40741203 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 110001221100 its reverse (1122100011), we get a palindrome (111123321111).

It can be divided in two parts, 11000 and 1221100, that added together give a square (1232100 = 1110²).

The spelling of 110001221100 in words is "one hundred ten billion, one million, two hundred twenty-one thousand, one hundred".