1001000100000 has 288 divisors, whose sum is σ = 3333408023232. Its totient is φ = 262944000000.

The previous prime is 1001000099993. The next prime is 1001000100053. The reversal of 1001000100000 is 10001001.

It is a Harshad number since it is a multiple of its sum of digits (3).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20075100 + ... + 20124900.

It is an arithmetic number, because the mean of its divisors is an integer number (11574333414).

Almost surely, 2^{1001000100000} is an apocalyptic number.

1001000100000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001000100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1666704011616).

1001000100000 is an abundant number, since it is smaller than the sum of its proper divisors (2332407923232).

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

1001000100000 is an frugal number, since it uses more digits than its factorization.

1001000100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49906 (or 49878 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 3.

Adding to 1001000100000 its reverse (10001001), we get a palindrome (1001010101001).

The spelling of 1001000100000 in words is "one trillion, one billion, one hundred thousand".