1200112212123 has 32 divisors (see below), whose sum is σ = 1968524209920. Its totient is φ = 716484890880.

The previous prime is 1200112212107. The next prime is 1200112212137. The reversal of 1200112212123 is 3212122110021.

It is not a de Polignac number, because 1200112212123 - 2⁴ = 1200112212107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200112212096 and 1200112212105.

It is not an unprimeable number, because it can be changed into a prime (1200112212163) 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 31 ways as a sum of consecutive naturals, for example, 30135190 + ... + 30174987.

It is an arithmetic number, because the mean of its divisors is an integer number (61516381560).

Almost surely, 2^{1200112212123} is an apocalyptic number.

1200112212123 is a deficient number, since it is larger than the sum of its proper divisors (768411997797).

1200112212123 is a wasteful number, since it uses less digits than its factorization.

1200112212123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60310264 (or 60310258 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1200112212123 its reverse (3212122110021), we get a palindrome (4412234322144).

The spelling of 1200112212123 in words is "one trillion, two hundred billion, one hundred twelve million, two hundred twelve thousand, one hundred twenty-three".