1103121173 has 12 divisors (see below), whose sum is σ = 1399879872. Its totient is φ = 859574520.

The previous prime is 1103121157. The next prime is 1103121203. The reversal of 1103121173 is 3711213011.

It is not a de Polignac number, because 1103121173 - 2⁴ = 1103121157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103120173) 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 11 ways as a sum of consecutive naturals, for example, 1022765 + ... + 1023842.

It is an arithmetic number, because the mean of its divisors is an integer number (116656656).

Almost surely, 2^1103121173 is an apocalyptic number.

It is an amenable number.

1103121173 is a deficient number, since it is larger than the sum of its proper divisors (296758699).

1103121173 is a wasteful number, since it uses less digits than its factorization.

1103121173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046632 (or 2046625 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 1103121173 is about 33213.2680264981. The cubic root of 1103121173 is about 1033.2555343323.

Adding to 1103121173 its reverse (3711213011), we get a palindrome (4814334184).

The spelling of 1103121173 in words is "one billion, one hundred three million, one hundred twenty-one thousand, one hundred seventy-three".