1200123321203 has 16 divisors (see below), whose sum is σ = 1229636229120. Its totient is φ = 1170778668096.

The previous prime is 1200123321179. The next prime is 1200123321239. The reversal of 1200123321203 is 3021233210021.

It is a cyclic number.

It is not a de Polignac number, because 1200123321203 - 2⁶ = 1200123321139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200123521203) 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, 50855975 + ... + 50879567.

It is an arithmetic number, because the mean of its divisors is an integer number (76852264320).

Almost surely, 2^{1200123321203} is an apocalyptic number.

1200123321203 is a deficient number, since it is larger than the sum of its proper divisors (29512907917).

1200123321203 is a wasteful number, since it uses less digits than its factorization.

1200123321203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27106.

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

Adding to 1200123321203 its reverse (3021233210021), we get a palindrome (4221356531224).

The spelling of 1200123321203 in words is "one trillion, two hundred billion, one hundred twenty-three million, three hundred twenty-one thousand, two hundred three".