23121434033989 has 2 divisors, whose sum is σ = 23121434033990. Its totient is φ = 23121434033988.

The previous prime is 23121434033969. The next prime is 23121434034029. The reversal of 23121434033989 is 98933043412132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17703409681764 + 5418024352225 = 4207542^2 + 2327665^2 .

It is a cyclic number.

It is not a de Polignac number, because 23121434033989 - 2²⁷ = 23121299816261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23121434033939) 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 as a sum of consecutive naturals, namely, 11560717016994 + 11560717016995.

It is an arithmetic number, because the mean of its divisors is an integer number (11560717016995).

Almost surely, 2^{23121434033989} is an apocalyptic number.

It is an amenable number.

23121434033989 is a deficient number, since it is larger than the sum of its proper divisors (1).

23121434033989 is an equidigital number, since it uses as much as digits as its factorization.

23121434033989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3359232, while the sum is 52.

The spelling of 23121434033989 in words is "twenty-three trillion, one hundred twenty-one billion, four hundred thirty-four million, thirty-three thousand, nine hundred eighty-nine".