1001012200120 has 16 divisors (see below), whose sum is σ = 2252277450360. Its totient is φ = 400404880032.

The previous prime is 1001012200109. The next prime is 1001012200147. The reversal of 1001012200120 is 210022101001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1001012200097 and 1001012200106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12512652462 + ... + 12512652541.

Almost surely, 2^{1001012200120} is an apocalyptic number.

1001012200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001012200120 is an abundant number, since it is smaller than the sum of its proper divisors (1251265250240).

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

1001012200120 is a wasteful number, since it uses less digits than its factorization.

1001012200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25025305014 (or 25025305010 counting only the distinct ones).

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

Adding to 1001012200120 its reverse (210022101001), we get a palindrome (1211034301121).

The spelling of 1001012200120 in words is "one trillion, one billion, twelve million, two hundred thousand, one hundred twenty".