1001002000100 has 72 divisors (see below), whose sum is σ = 2242550300928. Its totient is φ = 387431798400.

The previous prime is 1001002000099. The next prime is 1001002000109. The reversal of 1001002000100 is 10002001001.

It is a happy number.

1001002000100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is not an unprimeable number, because it can be changed into a prime (1001002000109) 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, 28790927 + ... + 28825673.

Almost surely, 2^{1001002000100} is an apocalyptic number.

1001002000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001002000100 is an abundant number, since it is smaller than the sum of its proper divisors (1241548300828).

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

1001002000100 is a wasteful number, since it uses less digits than its factorization.

1001002000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44085 (or 44078 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

Adding to 1001002000100 its reverse (10002001001), we get a palindrome (1011004001101).

Subtracting from 1001002000100 its reverse (10002001001), we obtain a palindrome (990999999099).

The spelling of 1001002000100 in words is "one trillion, one billion, two million, one hundred", and thus it is an aban number.