100123024421 has 6 divisors (see below), whose sum is σ = 116469640710. Its totient is φ = 85819735176.

The previous prime is 100123024409. The next prime is 100123024429. The reversal of 100123024421 is 124420321001.

It can be written as a sum of positive squares in only one way, i.e., 91861123396 + 8261901025 = 303086^2 + 90895^2 .

It is not a de Polignac number, because 100123024421 - 2⁶ = 100123024357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100123024393 and 100123024402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100123024429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1021663466 + ... + 1021663563.

It is an arithmetic number, because the mean of its divisors is an integer number (19411606785).

Almost surely, 2^100123024421 is an apocalyptic number.

It is an amenable number.

100123024421 is a deficient number, since it is larger than the sum of its proper divisors (16346616289).

100123024421 is an equidigital number, since it uses as much as digits as its factorization.

100123024421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043327043 (or 2043327036 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 100123024421 its reverse (124420321001), we get a palindrome (224543345422).

The spelling of 100123024421 in words is "one hundred billion, one hundred twenty-three million, twenty-four thousand, four hundred twenty-one".