1123043112999 has 12 divisors (see below), whose sum is σ = 1661738590512. Its totient is φ = 730434544800.

The previous prime is 1123043112991. The next prime is 1123043113019. The reversal of 1123043112999 is 9992113403211.

1123043112999 is a `hidden beast` number, since 1 + 1 + 2 + 3 + 0 + 431 + 129 + 99 = 666.

It is not a de Polignac number, because 1123043112999 - 2³ = 1123043112991 is a prime.

It is a super-2 number, since 2×1123043112999² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123043112991) 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, 1521738267 + ... + 1521739004.

It is an arithmetic number, because the mean of its divisors is an integer number (138478215876).

Almost surely, 2^{1123043112999} is an apocalyptic number.

1123043112999 is a deficient number, since it is larger than the sum of its proper divisors (538695477513).

1123043112999 is a wasteful number, since it uses less digits than its factorization.

1123043112999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3043477318 (or 3043477315 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The spelling of 1123043112999 in words is "one trillion, one hundred twenty-three billion, forty-three million, one hundred twelve thousand, nine hundred ninety-nine".