1001021001112 has 64 divisors (see below), whose sum is σ = 2157089587200. Its totient is φ = 430705434240.

The previous prime is 1001021001109. The next prime is 1001021001139. The reversal of 1001021001112 is 2111001201001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1781353 + ... + 2274919.

It is an arithmetic number, because the mean of its divisors is an integer number (33704524800).

Almost surely, 2^{1001021001112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001021001112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1078544793600).

1001021001112 is an abundant number, since it is smaller than the sum of its proper divisors (1156068586088).

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

1001021001112 is a wasteful number, since it uses less digits than its factorization.

1001021001112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494816 (or 494812 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1001021001112 its reverse (2111001201001), we get a palindrome (3112022202113).

The spelling of 1001021001112 in words is "one trillion, one billion, twenty-one million, one thousand, one hundred twelve".