1100121103 has 4 divisors (see below), whose sum is σ = 1100216160. Its totient is φ = 1100026048.

The previous prime is 1100121059. The next prime is 1100121107. The reversal of 1100121103 is 3011210011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1100121103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1100121103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100121107) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 27298 + ... + 54271.

It is an arithmetic number, because the mean of its divisors is an integer number (275054040).

Almost surely, 2^1100121103 is an apocalyptic number.

1100121103 is a deficient number, since it is larger than the sum of its proper divisors (95057).

1100121103 is an equidigital number, since it uses as much as digits as its factorization.

1100121103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95056.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1100121103 is about 33168.0735497255. The cubic root of 1100121103 is about 1032.3179965568.

Adding to 1100121103 its reverse (3011210011), we get a palindrome (4111331114).

The spelling of 1100121103 in words is "one billion, one hundred million, one hundred twenty-one thousand, one hundred three".