23201121193 has 2 divisors, whose sum is σ = 23201121194. Its totient is φ = 23201121192.

The previous prime is 23201121191. The next prime is 23201121211. The reversal of 23201121193 is 39112110232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19686054249 + 3515066944 = 140307^2 + 59288^2 .

It is a cyclic number.

It is not a de Polignac number, because 23201121193 - 2¹ = 23201121191 is a prime.

It is a super-2 number, since 2×23201121193² (a number of 22 digits) contains 22 as substring.

Together with 23201121191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23201121191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11600560596 + 11600560597.

It is an arithmetic number, because the mean of its divisors is an integer number (11600560597).

Almost surely, 2^23201121193 is an apocalyptic number.

It is an amenable number.

23201121193 is a deficient number, since it is larger than the sum of its proper divisors (1).

23201121193 is an equidigital number, since it uses as much as digits as its factorization.

23201121193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 23201121193 in words is "twenty-three billion, two hundred one million, one hundred twenty-one thousand, one hundred ninety-three".