23331121000261 has 2 divisors, whose sum is σ = 23331121000262. Its totient is φ = 23331121000260.

The previous prime is 23331121000193. The next prime is 23331121000331. The reversal of 23331121000261 is 16200012113332.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17449918836100 + 5881202164161 = 4177310^2 + 2425119^2 .

It is a cyclic number.

It is not a de Polignac number, because 23331121000261 - 2⁷ = 23331121000133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23331121000861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11665560500130 + 11665560500131.

It is an arithmetic number, because the mean of its divisors is an integer number (11665560500131).

Almost surely, 2^{23331121000261} is an apocalyptic number.

It is an amenable number.

23331121000261 is a deficient number, since it is larger than the sum of its proper divisors (1).

23331121000261 is an equidigital number, since it uses as much as digits as its factorization.

23331121000261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 23331121000261 its reverse (16200012113332), we get a palindrome (39531133113593).

The spelling of 23331121000261 in words is "twenty-three trillion, three hundred thirty-one billion, one hundred twenty-one million, two hundred sixty-one", and thus it is an aban number.