1110221100 has 72 divisors (see below), whose sum is σ = 3569163920. Its totient is φ = 296058240.

The previous prime is 1110221087. The next prime is 1110221141. The reversal of 1110221100 is 11220111.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202897 + ... + 208296.

Almost surely, 2^1110221100 is an apocalyptic number.

1110221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1110221100 is an abundant number, since it is smaller than the sum of its proper divisors (2458942820).

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

1110221100 is a wasteful number, since it uses less digits than its factorization.

1110221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411216 (or 411203 counting only the distinct ones).

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

The square root of 1110221100 is about 33319.9804921912. The cubic root of 1110221100 is about 1035.4675476339.

Adding to 1110221100 its reverse (11220111), we get a palindrome (1121441211).

The spelling of 1110221100 in words is "one billion, one hundred ten million, two hundred twenty-one thousand, one hundred".