1200112123 has 16 divisors (see below), whose sum is σ = 1382088960. Its totient is φ = 1020794400.

The previous prime is 1200112117. The next prime is 1200112139. The reversal of 1200112123 is 3212110021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200112123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200112153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1015593 + ... + 1016773.

It is an arithmetic number, because the mean of its divisors is an integer number (86380560).

Almost surely, 2^1200112123 is an apocalyptic number.

1200112123 is a deficient number, since it is larger than the sum of its proper divisors (181976837).

1200112123 is a wasteful number, since it uses less digits than its factorization.

1200112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1200112123 is about 34642.6344696820. The cubic root of 1200112123 is about 1062.6916649482.

Adding to 1200112123 its reverse (3212110021), we get a palindrome (4412222144).

The spelling of 1200112123 in words is "one billion, two hundred million, one hundred twelve thousand, one hundred twenty-three".