1200112111121 has 8 divisors (see below), whose sum is σ = 1496243671104. Its totient is φ = 935152294320.

The previous prime is 1200112111111. The next prime is 1200112111169. The reversal of 1200112111121 is 1211112110021.

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 1200112111121 - 2³⁰ = 1199038369297 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1200112111096 and 1200112111105.

It is not an unprimeable number, because it can be changed into a prime (1200112111111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7792935710 + ... + 7792935863.

It is an arithmetic number, because the mean of its divisors is an integer number (187030458888).

Almost surely, 2^{1200112111121} is an apocalyptic number.

1200112111121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200112111121 is a deficient number, since it is larger than the sum of its proper divisors (296131559983).

1200112111121 is a wasteful number, since it uses less digits than its factorization.

1200112111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15585871591.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1200112111121 its reverse (1211112110021), we get a palindrome (2411224221142).

The spelling of 1200112111121 in words is "one trillion, two hundred billion, one hundred twelve million, one hundred eleven thousand, one hundred twenty-one".