1000120021012 has 12 divisors (see below), whose sum is σ = 2000240042080. Its totient is φ = 428622866136.

The previous prime is 1000120020997. The next prime is 1000120021049. The reversal of 1000120021012 is 2101200210001.

1000120021012 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000120021012.

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, 17859286062 + ... + 17859286117.

Almost surely, 2^{1000120021012} is an apocalyptic number.

It is an amenable number.

1000120021012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1000120021012 is a wasteful number, since it uses less digits than its factorization.

1000120021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35718572190 (or 35718572188 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1000120021012 its reverse (2101200210001), we get a palindrome (3101320231013).

The spelling of 1000120021012 in words is "one trillion, one hundred twenty million, twenty-one thousand, twelve".