23121121223279 has 2 divisors, whose sum is σ = 23121121223280. Its totient is φ = 23121121223278.

The previous prime is 23121121223183. The next prime is 23121121223281. The reversal of 23121121223279 is 97232212112132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23121121223279 - 2⁸ = 23121121223023 is a prime.

Together with 23121121223281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23121121223579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560560611639 + 11560560611640.

It is an arithmetic number, because the mean of its divisors is an integer number (11560560611640).

Almost surely, 2^{23121121223279} is an apocalyptic number.

23121121223279 is a deficient number, since it is larger than the sum of its proper divisors (1).

23121121223279 is an equidigital number, since it uses as much as digits as its factorization.

23121121223279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The spelling of 23121121223279 in words is "twenty-three trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred twenty-three thousand, two hundred seventy-nine".