23230312100021 has 4 divisors (see below), whose sum is σ = 25017259184652. Its totient is φ = 21443365015392.

The previous prime is 23230312099957. The next prime is 23230312100059. The reversal of 23230312100021 is 12000121303232.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4792640424100 + 18437671675921 = 2189210^2 + 4293911^2 .

It is a cyclic number.

It is not a de Polignac number, because 23230312100021 - 2⁶ = 23230312099957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23230312099966 and 23230312100002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23230312100221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893473542296 + ... + 893473542321.

It is an arithmetic number, because the mean of its divisors is an integer number (6254314796163).

Almost surely, 2^{23230312100021} is an apocalyptic number.

It is an amenable number.

23230312100021 is a deficient number, since it is larger than the sum of its proper divisors (1786947084631).

23230312100021 is a wasteful number, since it uses less digits than its factorization.

23230312100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786947084630.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23230312100021 its reverse (12000121303232), we get a palindrome (35230433403253).

The spelling of 23230312100021 in words is "twenty-three trillion, two hundred thirty billion, three hundred twelve million, one hundred thousand, twenty-one".