1200123102112 has 48 divisors (see below), whose sum is σ = 2637479873952. Its totient is φ = 532824203520.

The previous prime is 1200123102077. The next prime is 1200123102121. The reversal of 1200123102112 is 2112013210021.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 39629523 + ... + 39659794.

It is an arithmetic number, because the mean of its divisors is an integer number (54947497374).

Almost surely, 2^{1200123102112} is an apocalyptic number.

It is an amenable number.

1200123102112 is an abundant number, since it is smaller than the sum of its proper divisors (1437356771840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1200123102112 is a wasteful number, since it uses less digits than its factorization.

1200123102112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79289381 (or 79289373 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1200123102112 its reverse (2112013210021), we get a palindrome (3312136312133).

The spelling of 1200123102112 in words is "one trillion, two hundred billion, one hundred twenty-three million, one hundred two thousand, one hundred twelve".