24123421021 has 8 divisors (see below), whose sum is σ = 27619125120. Its totient is φ = 20640092208.

The previous prime is 24123421009. The next prime is 24123421051. The reversal of 24123421021 is 12012432142.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 24123421021 - 2²³ = 24115032413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24123420983 and 24123421001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24123421051) 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, 3089641 + ... + 3097438.

It is an arithmetic number, because the mean of its divisors is an integer number (3452390640).

Almost surely, 2^24123421021 is an apocalyptic number.

It is an amenable number.

24123421021 is a deficient number, since it is larger than the sum of its proper divisors (3495704099).

24123421021 is an equidigital number, since it uses as much as digits as its factorization.

24123421021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6187643.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 24123421021 its reverse (12012432142), we get a palindrome (36135853163).

The spelling of 24123421021 in words is "twenty-four billion, one hundred twenty-three million, four hundred twenty-one thousand, twenty-one".