100021013423 has 4 divisors (see below), whose sum is σ = 100289166648. Its totient is φ = 99752860200.

The previous prime is 100021013419. The next prime is 100021013441. The reversal of 100021013423 is 324310120001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100021013423 - 2² = 100021013419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021013413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134076053 + ... + 134076798.

It is an arithmetic number, because the mean of its divisors is an integer number (25072291662).

Almost surely, 2^100021013423 is an apocalyptic number.

100021013423 is a deficient number, since it is larger than the sum of its proper divisors (268153225).

100021013423 is an equidigital number, since it uses as much as digits as its factorization.

100021013423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268153224.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 100021013423 its reverse (324310120001), we get a palindrome (424331133424).

The spelling of 100021013423 in words is "one hundred billion, twenty-one million, thirteen thousand, four hundred twenty-three".