1123001121 has 24 divisors (see below), whose sum is σ = 1668415840. Its totient is φ = 671267520.

The previous prime is 1123001057. The next prime is 1123001129. The reversal of 1123001121 is 1211003211.

It is not a de Polignac number, because 1123001121 - 2⁶ = 1123001057 is a prime.

It is a super-2 number, since 2×1123001121² = 2522263035534513282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123001097 and 1123001106.

It is not an unprimeable number, because it can be changed into a prime (1123001129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5310 + ... + 47688.

Almost surely, 2^1123001121 is an apocalyptic number.

1123001121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1123001121 is a deficient number, since it is larger than the sum of its proper divisors (545414719).

1123001121 is a wasteful number, since it uses less digits than its factorization.

1123001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42477 (or 42466 counting only the distinct ones).

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

The square root of 1123001121 is about 33511.2088859832. The cubic root of 1123001121 is about 1039.4255706626.

Adding to 1123001121 its reverse (1211003211), we get a palindrome (2334004332).

The spelling of 1123001121 in words is "one billion, one hundred twenty-three million, one thousand, one hundred twenty-one".