100001210002100 has 144 divisors (see below), whose sum is σ = 239199282724416. Its totient is φ = 35984881152000.

The previous prime is 100001210002097. The next prime is 100001210002117. The reversal of 100001210002100 is 1200012100001.

It is a congruent number.

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, 969958154 + ... + 970061246.

Almost surely, 2^{100001210002100} is an apocalyptic number.

100001210002100 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 100001210002100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119599641362208).

100001210002100 is an abundant number, since it is smaller than the sum of its proper divisors (139198072722316).

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

100001210002100 is a wasteful number, since it uses less digits than its factorization.

100001210002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112306 (or 112299 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 100001210002100 its reverse (1200012100001), we get a palindrome (101201222102101).

The spelling of 100001210002100 in words is "one hundred trillion, one billion, two hundred ten million, two thousand, one hundred".