23130112221 has 16 divisors (see below), whose sum is σ = 34689883520. Its totient is φ = 15420073356.

The previous prime is 23130112199. The next prime is 23130112261. The reversal of 23130112221 is 12221103132.

It is not a de Polignac number, because 23130112221 - 2¹¹ = 23130110173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23130112194 and 23130112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130112261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5285905 + ... + 5290278.

It is an arithmetic number, because the mean of its divisors is an integer number (2168117720).

Almost surely, 2^23130112221 is an apocalyptic number.

It is an amenable number.

23130112221 is a deficient number, since it is larger than the sum of its proper divisors (11559771299).

23130112221 is an frugal number, since it uses more digits than its factorization.

23130112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10576204 (or 10576186 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 23130112221 its reverse (12221103132), we get a palindrome (35351215353).

The spelling of 23130112221 in words is "twenty-three billion, one hundred thirty million, one hundred twelve thousand, two hundred twenty-one".