23121302300021 has 8 divisors (see below), whose sum is σ = 24098870674944. Its totient is φ = 22158216419760.

The previous prime is 23121302300017. The next prime is 23121302300027. The reversal of 23121302300021 is 12000320312132.

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 23121302300021 - 2² = 23121302300017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23121302299966 and 23121302300002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121302300027) 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, 3620620406 + ... + 3620626791.

It is an arithmetic number, because the mean of its divisors is an integer number (3012358834368).

Almost surely, 2^{23121302300021} is an apocalyptic number.

It is an amenable number.

23121302300021 is a deficient number, since it is larger than the sum of its proper divisors (977568374923).

23121302300021 is a wasteful number, since it uses less digits than its factorization.

23121302300021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7241247331.

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

Adding to 23121302300021 its reverse (12000320312132), we get a palindrome (35121622612153).

The spelling of 23121302300021 in words is "twenty-three trillion, one hundred twenty-one billion, three hundred two million, three hundred thousand, twenty-one".