23123130303221 has 4 divisors (see below), whose sum is σ = 24901832634252. Its totient is φ = 21344427972192.

The previous prime is 23123130303199. The next prime is 23123130303227. The reversal of 23123130303221 is 12230303132132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4517797011121 + 18605333292100 = 2125511^2 + 4313390^2 .

It is not a de Polignac number, because 23123130303221 - 2⁶ = 23123130303157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123130303227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889351165496 + ... + 889351165521.

It is an arithmetic number, because the mean of its divisors is an integer number (6225458158563).

Almost surely, 2^{23123130303221} is an apocalyptic number.

It is an amenable number.

23123130303221 is a deficient number, since it is larger than the sum of its proper divisors (1778702331031).

23123130303221 is a wasteful number, since it uses less digits than its factorization.

23123130303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778702331030.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 23123130303221 its reverse (12230303132132), we get a palindrome (35353433435353).

The spelling of 23123130303221 in words is "twenty-three trillion, one hundred twenty-three billion, one hundred thirty million, three hundred three thousand, two hundred twenty-one".