1200112111001 has 4 divisors (see below), whose sum is σ = 1200115967232. Its totient is φ = 1200108254772.

The previous prime is 1200112110991. The next prime is 1200112111019. The reversal of 1200112111001 is 1001112110021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1200112111001 - 2²⁶ = 1200045002137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200112111091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1415945 + ... + 2098838.

It is an arithmetic number, because the mean of its divisors is an integer number (300028991808).

Almost surely, 2^{1200112111001} is an apocalyptic number.

It is an amenable number.

1200112111001 is a deficient number, since it is larger than the sum of its proper divisors (3856231).

1200112111001 is an equidigital number, since it uses as much as digits as its factorization.

1200112111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3856230.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1200112111001 its reverse (1001112110021), we get a palindrome (2201224221022).

The spelling of 1200112111001 in words is "one trillion, two hundred billion, one hundred twelve million, one hundred eleven thousand, one".