1111103121 has 12 divisors (see below), whose sum is σ = 1496325296. Its totient is φ = 733381200.

The previous prime is 1111103107. The next prime is 1111103131. The reversal of 1111103121 is 1213011111.

It is not a de Polignac number, because 1111103121 - 2⁵ = 1111103089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111103097 and 1111103106.

It is not an unprimeable number, because it can be changed into a prime (1111103131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12450 + ... + 48756.

Almost surely, 2^1111103121 is an apocalyptic number.

It is an amenable number.

1111103121 is a deficient number, since it is larger than the sum of its proper divisors (385222175).

1111103121 is an equidigital number, since it uses as much as digits as its factorization.

1111103121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36512 (or 36411 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 12.

The square root of 1111103121 is about 33333.2134814512. The cubic root of 1111103121 is about 1035.7416859320.

Adding to 1111103121 its reverse (1213011111), we get a palindrome (2324114232).

The spelling of 1111103121 in words is "one billion, one hundred eleven million, one hundred three thousand, one hundred twenty-one".