1103021121 has 16 divisors (see below), whose sum is σ = 1477059584. Its totient is φ = 732173904.

The previous prime is 1103021063. The next prime is 1103021191. The reversal of 1103021121 is 1211203011.

It is not a de Polignac number, because 1103021121 - 2¹⁷ = 1102890049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103021097 and 1103021106.

It is not an unprimeable number, because it can be changed into a prime (1103021191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1140180 + ... + 1141146.

It is an arithmetic number, because the mean of its divisors is an integer number (92316224).

Almost surely, 2^1103021121 is an apocalyptic number.

It is an amenable number.

1103021121 is a deficient number, since it is larger than the sum of its proper divisors (374038463).

1103021121 is an equidigital number, since it uses as much as digits as its factorization.

1103021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1103021121 is about 33211.7617870537. The cubic root of 1103021121 is about 1033.2242949693.

Adding to 1103021121 its reverse (1211203011), we get a palindrome (2314224132).

The spelling of 1103021121 in words is "one billion, one hundred three million, twenty-one thousand, one hundred twenty-one".