1200112110121 has 4 divisors (see below), whose sum is σ = 1204573493700. Its totient is φ = 1195650726544.

The previous prime is 1200112110091. The next prime is 1200112110133. The reversal of 1200112110121 is 1210112110021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 526588240896 + 673523869225 = 725664^2 + 820685^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200112110121 - 2³¹ = 1197964626473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200112110181) 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 3 ways as a sum of consecutive naturals, for example, 2230691386 + ... + 2230691923.

It is an arithmetic number, because the mean of its divisors is an integer number (301143373425).

Almost surely, 2^{1200112110121} is an apocalyptic number.

It is an amenable number.

1200112110121 is a deficient number, since it is larger than the sum of its proper divisors (4461383579).

1200112110121 is an equidigital number, since it uses as much as digits as its factorization.

1200112110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461383578.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1200112110121 its reverse (1210112110021), we get a palindrome (2410224220142).

The spelling of 1200112110121 in words is "one trillion, two hundred billion, one hundred twelve million, one hundred ten thousand, one hundred twenty-one".