23205145211 has 12 divisors (see below), whose sum is σ = 24311264712. Its totient is φ = 22147425696.

The previous prime is 23205145199. The next prime is 23205145247. The reversal of 23205145211 is 11254150232.

It is not a de Polignac number, because 23205145211 - 2¹⁰ = 23205144187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23205145291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 193760 + ... + 289746.

It is an arithmetic number, because the mean of its divisors is an integer number (2025938726).

Almost surely, 2^23205145211 is an apocalyptic number.

23205145211 is a deficient number, since it is larger than the sum of its proper divisors (1106119501).

23205145211 is an equidigital number, since it uses as much as digits as its factorization.

23205145211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96490 (or 96467 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 23205145211 its reverse (11254150232), we get a palindrome (34459295443).

The spelling of 23205145211 in words is "twenty-three billion, two hundred five million, one hundred forty-five thousand, two hundred eleven".