100002100021209 has 8 divisors (see below), whose sum is σ = 148151259290720. Its totient is φ = 66668066680788.

The previous prime is 100002100021183. The next prime is 100002100021283. The reversal of 100002100021209 is 902120001200001.

It is not a de Polignac number, because 100002100021209 - 2¹¹ = 100002100019161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100002100021191 and 100002100021200.

It is not an unprimeable number, because it can be changed into a prime (100002100021309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1851890741107 + ... + 1851890741160.

It is an arithmetic number, because the mean of its divisors is an integer number (18518907411340).

Almost surely, 2^{100002100021209} is an apocalyptic number.

It is an amenable number.

100002100021209 is a deficient number, since it is larger than the sum of its proper divisors (48149159269511).

100002100021209 is an equidigital number, since it uses as much as digits as its factorization.

100002100021209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703781482276 (or 3703781482270 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 100002100021209 in words is "one hundred trillion, two billion, one hundred million, twenty-one thousand, two hundred nine".