1200123230123 has 16 divisors (see below), whose sum is σ = 1248974284800. Its totient is φ = 1152228097440.

The previous prime is 1200123230101. The next prime is 1200123230153. The reversal of 1200123230123 is 3210323210021.

It is a cyclic number.

It is not a de Polignac number, because 1200123230123 - 2²⁸ = 1199854794667 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200123230095 and 1200123230104.

It is not an unprimeable number, because it can be changed into a prime (1200123230153) 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, 34889393 + ... + 34923773.

It is an arithmetic number, because the mean of its divisors is an integer number (78060892800).

Almost surely, 2^{1200123230123} is an apocalyptic number.

1200123230123 is a deficient number, since it is larger than the sum of its proper divisors (48851054677).

1200123230123 is a wasteful number, since it uses less digits than its factorization.

1200123230123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48242.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1200123230123 its reverse (3210323210021), we get a palindrome (4410446440144).

The spelling of 1200123230123 in words is "one trillion, two hundred billion, one hundred twenty-three million, two hundred thirty thousand, one hundred twenty-three".