23121213121001 has 8 divisors (see below), whose sum is σ = 23960385134400. Its totient is φ = 22284833694480.

The previous prime is 23121213120979. The next prime is 23121213121007. The reversal of 23121213121001 is 10012131212132.

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 23121213121001 - 2³⁸ = 22846335214057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23121213121007) 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 7 ways as a sum of consecutive naturals, for example, 698129861 + ... + 698162978.

It is an arithmetic number, because the mean of its divisors is an integer number (2995048141800).

Almost surely, 2^{23121213121001} is an apocalyptic number.

It is an amenable number.

23121213121001 is a deficient number, since it is larger than the sum of its proper divisors (839172013399).

23121213121001 is a wasteful number, since it uses less digits than its factorization.

23121213121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396293439.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 23121213121001 its reverse (10012131212132), we get a palindrome (33133344333133).

The spelling of 23121213121001 in words is "twenty-three trillion, one hundred twenty-one billion, two hundred thirteen million, one hundred twenty-one thousand, one".