1200311102123 has 32 divisors (see below), whose sum is σ = 1468407564288. Its totient is φ = 957711052800.

The previous prime is 1200311102059. The next prime is 1200311102131. The reversal of 1200311102123 is 3212011130021.

It is a cyclic number.

It is not a de Polignac number, because 1200311102123 - 2⁶ = 1200311102059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (1200311102923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18100958 + ... + 18167148.

It is an arithmetic number, because the mean of its divisors is an integer number (45887736384).

Almost surely, 2^{1200311102123} is an apocalyptic number.

1200311102123 is a deficient number, since it is larger than the sum of its proper divisors (268096462165).

1200311102123 is a wasteful number, since it uses less digits than its factorization.

1200311102123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67883.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1200311102123 its reverse (3212011130021), we get a palindrome (4412322232144).

The spelling of 1200311102123 in words is "one trillion, two hundred billion, three hundred eleven million, one hundred two thousand, one hundred twenty-three".