1121032123 has 4 divisors (see below), whose sum is σ = 1122187608. Its totient is φ = 1119876640.

The previous prime is 1121032117. The next prime is 1121032147. The reversal of 1121032123 is 3212301211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3212301211 = 7 ⋅458900173.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121032123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121032097 and 1121032106.

It is not an unprimeable number, because it can be changed into a prime (1121032153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576286 + ... + 578227.

It is an arithmetic number, because the mean of its divisors is an integer number (280546902).

Almost surely, 2^1121032123 is an apocalyptic number.

1121032123 is a deficient number, since it is larger than the sum of its proper divisors (1155485).

1121032123 is an equidigital number, since it uses as much as digits as its factorization.

1121032123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155484.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1121032123 is about 33481.8177971268. The cubic root of 1121032123 is about 1038.8177279397.

Adding to 1121032123 its reverse (3212301211), we get a palindrome (4333333334).

The spelling of 1121032123 in words is "one billion, one hundred twenty-one million, thirty-two thousand, one hundred twenty-three".