100000021002100 has 72 divisors (see below), whose sum is σ = 224004440242688. Its totient is φ = 38708926358400.

The previous prime is 100000021002043. The next prime is 100000021002103. The reversal of 100000021002100 is 1200120000001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100000021002103) 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, 173103937 + ... + 173680663.

Almost surely, 2^{100000021002100} is an apocalyptic number.

100000021002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100000021002100 is an abundant number, since it is smaller than the sum of its proper divisors (124004419240588).

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

100000021002100 is a wasteful number, since it uses less digits than its factorization.

100000021002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632705 (or 632698 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 100000021002100 its reverse (1200120000001), we get a palindrome (101200141002101).

The spelling of 100000021002100 in words is "one hundred trillion, twenty-one million, two thousand, one hundred".