23101334521 has 2 divisors, whose sum is σ = 23101334522. Its totient is φ = 23101334520.

The previous prime is 23101334519. The next prime is 23101334551. The reversal of 23101334521 is 12543310132.

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., 20942431225 + 2158903296 = 144715^2 + 46464^2 .

It is a cyclic number.

It is not a de Polignac number, because 23101334521 - 2¹ = 23101334519 is a prime.

It is a super-2 number, since 2×23101334521² (a number of 22 digits) contains 22 as substring.

Together with 23101334519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23101334551) 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 as a sum of consecutive naturals, namely, 11550667260 + 11550667261.

It is an arithmetic number, because the mean of its divisors is an integer number (11550667261).

Almost surely, 2^23101334521 is an apocalyptic number.

It is an amenable number.

23101334521 is a deficient number, since it is larger than the sum of its proper divisors (1).

23101334521 is an equidigital number, since it uses as much as digits as its factorization.

23101334521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 23101334521 its reverse (12543310132), we get a palindrome (35644644653).

The spelling of 23101334521 in words is "twenty-three billion, one hundred one million, three hundred thirty-four thousand, five hundred twenty-one".