1123043113045 has 24 divisors (see below), whose sum is σ = 1618246729728. Its totient is φ = 745245194400.

The previous prime is 1123043113039. The next prime is 1123043113061. The reversal of 1123043113045 is 5403113403211.

It is not a de Polignac number, because 1123043113045 - 2⁹ = 1123043112533 is a prime.

It is a super-2 number, since 2×1123043113045² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73925461 + ... + 73940650.

It is an arithmetic number, because the mean of its divisors is an integer number (67426947072).

Almost surely, 2^{1123043113045} is an apocalyptic number.

It is an amenable number.

1123043113045 is a deficient number, since it is larger than the sum of its proper divisors (495203616683).

1123043113045 is a wasteful number, since it uses less digits than its factorization.

1123043113045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147866161 (or 147866154 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 1123043113045 its reverse (5403113403211), we get a palindrome (6526156516256).

The spelling of 1123043113045 in words is "one trillion, one hundred twenty-three billion, forty-three million, one hundred thirteen thousand, forty-five".