23121520241233 has 2 divisors, whose sum is σ = 23121520241234. Its totient is φ = 23121520241232.

The previous prime is 23121520241189. The next prime is 23121520241249. The reversal of 23121520241233 is 33214202512132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23013195000849 + 108325240384 = 4797207^2 + 329128^2 .

It is a cyclic number.

It is not a de Polignac number, because 23121520241233 - 2⁴¹ = 20922496985681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23121520241195 and 23121520241204.

It is not a weakly prime, because it can be changed into another prime (23121520241033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560760120616 + 11560760120617.

It is an arithmetic number, because the mean of its divisors is an integer number (11560760120617).

Almost surely, 2^{23121520241233} is an apocalyptic number.

It is an amenable number.

23121520241233 is a deficient number, since it is larger than the sum of its proper divisors (1).

23121520241233 is an equidigital number, since it uses as much as digits as its factorization.

23121520241233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 23121520241233 its reverse (33214202512132), we get a palindrome (56335722753365).

The spelling of 23121520241233 in words is "twenty-three trillion, one hundred twenty-one billion, five hundred twenty million, two hundred forty-one thousand, two hundred thirty-three".