100002100023 has 24 divisors (see below), whose sum is σ = 165260628000. Its totient is φ = 57082512384.

The previous prime is 100002099971. The next prime is 100002100043. The reversal of 100002100023 is 320001200001.

It is a happy number.

It is not a de Polignac number, because 100002100023 - 2⁶ = 100002099959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100002099978 and 100002100014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100002100043) 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, 795798 + ... + 912851.

It is an arithmetic number, because the mean of its divisors is an integer number (6885859500).

Almost surely, 2^100002100023 is an apocalyptic number.

100002100023 is a deficient number, since it is larger than the sum of its proper divisors (65258527977).

100002100023 is a wasteful number, since it uses less digits than its factorization.

100002100023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709591 (or 1709588 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 100002100023 its reverse (320001200001), we get a palindrome (420003300024).

The spelling of 100002100023 in words is "one hundred billion, two million, one hundred thousand, twenty-three".