20321222112979 has 2 divisors, whose sum is σ = 20321222112980. Its totient is φ = 20321222112978.

The previous prime is 20321222112941. The next prime is 20321222113021. The reversal of 20321222112979 is 97921122212302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20321222112979 - 2⁹ = 20321222112467 is a prime.

It is not a weakly prime, because it can be changed into another prime (20321222112929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160611056489 + 10160611056490.

It is an arithmetic number, because the mean of its divisors is an integer number (10160611056490).

Almost surely, 2^{20321222112979} is an apocalyptic number.

20321222112979 is a deficient number, since it is larger than the sum of its proper divisors (1).

20321222112979 is an equidigital number, since it uses as much as digits as its factorization.

20321222112979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 20321222112979 in words is "twenty trillion, three hundred twenty-one billion, two hundred twenty-two million, one hundred twelve thousand, nine hundred seventy-nine".