1000000100000 has 144 divisors (see below), whose sum is σ = 2684490494112. Its totient is φ = 363636000000.

The previous prime is 1000000099841. The next prime is 1000000100003. The reversal of 1000000100000 is 10000001.

It is a sliding number, since 1000000100000 = 100000 + 1000000000000 and 1/100000 + 1/1000000000000 = 0.00001000000100000.

It is a Harshad number since it is a multiple of its sum of digits (2).

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

It is not an unprimeable number, because it can be changed into a prime (1000000100003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 645455 + ... + 1554545.

It is an arithmetic number, because the mean of its divisors is an integer number (18642295098).

Almost surely, 2^{1000000100000} is an apocalyptic number.

1000000100000 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 1000000100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1342245247056).

1000000100000 is an abundant number, since it is smaller than the sum of its proper divisors (1684490394112).

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

1000000100000 is an frugal number, since it uses more digits than its factorization.

1000000100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909137 (or 909109 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 2.

Adding to 1000000100000 its reverse (10000001), we get a palindrome (1000010100001).

Subtracting from 1000000100000 its reverse (10000001), we obtain a palindrome (999990099999).

1000000100000 divided by its reverse (10000001) gives a 5-th power (100000 = 10⁵).

The spelling of 1000000100000 in words is "one trillion, one hundred thousand".