1200123232123 has 8 divisors (see below), whose sum is σ = 1202177330640. Its totient is φ = 1198070109600.

The previous prime is 1200123232117. The next prime is 1200123232127. The reversal of 1200123232123 is 3212323210021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200123232123 - 2⁹ = 1200123231611 is a prime.

It is a super-2 number, since 2×1200123232123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200123232094 and 1200123232103.

It is not an unprimeable number, because it can be changed into a prime (1200123232127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2238961 + ... + 2722717.

It is an arithmetic number, because the mean of its divisors is an integer number (150272166330).

Almost surely, 2^{1200123232123} is an apocalyptic number.

1200123232123 is a deficient number, since it is larger than the sum of its proper divisors (2054098517).

1200123232123 is an equidigital number, since it uses as much as digits as its factorization.

1200123232123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487997.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1200123232123 its reverse (3212323210021), we get a palindrome (4412446442144).

The spelling of 1200123232123 in words is "one trillion, two hundred billion, one hundred twenty-three million, two hundred thirty-two thousand, one hundred twenty-three".