1002001021112 has 128 divisors (see below), whose sum is σ = 2577188275200. Its totient is φ = 353442797568.

The previous prime is 1002001021081. The next prime is 1002001021117. The reversal of 1002001021112 is 2111201002001.

It is a junction number, because it is equal to n+sod(n) for n = 1002001021093 and 1002001021102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002001021117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1895468 + ... + 2365755.

It is an arithmetic number, because the mean of its divisors is an integer number (20134283400).

Almost surely, 2^{1002001021112} is an apocalyptic number.

It is an amenable number.

1002001021112 is an abundant number, since it is smaller than the sum of its proper divisors (1575187254088).

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

1002001021112 is a wasteful number, since it uses less digits than its factorization.

1002001021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4261285 (or 4261281 counting only the distinct ones).

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

Adding to 1002001021112 its reverse (2111201002001), we get a palindrome (3113202023113).

The spelling of 1002001021112 in words is "one trillion, two billion, one million, twenty-one thousand, one hundred twelve".