1121223123 has 12 divisors (see below), whose sum is σ = 1619839000. Its totient is φ = 747346176.

The previous prime is 1121223071. The next prime is 1121223139. The reversal of 1121223123 is 3213221211.

It is not a de Polignac number, because 1121223123 - 2¹³ = 1121214931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121223096 and 1121223105.

It is not an unprimeable number, because it can be changed into a prime (1121223223) 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 11 ways as a sum of consecutive naturals, for example, 78003 + ... + 91251.

Almost surely, 2^1121223123 is an apocalyptic number.

1121223123 is a deficient number, since it is larger than the sum of its proper divisors (498615877).

1121223123 is a wasteful number, since it uses less digits than its factorization.

1121223123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22658 (or 22655 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1121223123 is about 33484.6699700027. The cubic root of 1121223123 is about 1038.8767220620.

Adding to 1121223123 its reverse (3213221211), we get a palindrome (4334444334).

The spelling of 1121223123 in words is "one billion, one hundred twenty-one million, two hundred twenty-three thousand, one hundred twenty-three".