13023112221 has 48 divisors (see below), whose sum is σ = 22737661440. Its totient is φ = 7016556960.

The previous prime is 13023112217. The next prime is 13023112229. The reversal of 13023112221 is 12221132031.

13023112221 is a `hidden beast` number, since 130 + 2 + 311 + 2 + 221 = 666.

It is not a de Polignac number, because 13023112221 - 2² = 13023112217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13023112194 and 13023112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13023112229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 226786 + ... + 278348.

It is an arithmetic number, because the mean of its divisors is an integer number (473701280).

Almost surely, 2^13023112221 is an apocalyptic number.

It is an amenable number.

13023112221 is a deficient number, since it is larger than the sum of its proper divisors (9714549219).

13023112221 is a wasteful number, since it uses less digits than its factorization.

13023112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51806 (or 51803 counting only the distinct ones).

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

Adding to 13023112221 its reverse (12221132031), we get a palindrome (25244244252).

The spelling of 13023112221 in words is "thirteen billion, twenty-three million, one hundred twelve thousand, two hundred twenty-one".