1200121001012 has 12 divisors (see below), whose sum is σ = 2120602157856. Its totient is φ = 594234670200.

The previous prime is 1200121000957. The next prime is 1200121001029. The reversal of 1200121001012 is 2101001210021.

It is a junction number, because it is equal to n+sod(n) for n = 1200121000984 and 1200121001002.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1456457114 + ... + 1456457937.

It is an arithmetic number, because the mean of its divisors is an integer number (176716846488).

Almost surely, 2^{1200121001012} is an apocalyptic number.

It is an amenable number.

1200121001012 is a deficient number, since it is larger than the sum of its proper divisors (920481156844).

1200121001012 is a wasteful number, since it uses less digits than its factorization.

1200121001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912915158 (or 2912915156 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1200121001012 its reverse (2101001210021), we get a palindrome (3301122211033).

The spelling of 1200121001012 in words is "one trillion, two hundred billion, one hundred twenty-one million, one thousand, twelve".