13112322221 has 8 divisors (see below), whose sum is σ = 13256832000. Its totient is φ = 12968571600.

The previous prime is 13112322211. The next prime is 13112322227. The reversal of 13112322221 is 12222321131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13112322221 is a prime.

It is a super-3 number, since 3×13112322221³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13112322193 and 13112322202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13112322227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155021 + ... + 224178.

It is an arithmetic number, because the mean of its divisors is an integer number (1657104000).

Almost surely, 2^13112322221 is an apocalyptic number.

It is an amenable number.

13112322221 is a deficient number, since it is larger than the sum of its proper divisors (144509779).

13112322221 is a wasteful number, since it uses less digits than its factorization.

13112322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379579.

The product of its digits is 288, while the sum is 20.

Adding to 13112322221 its reverse (12222321131), we get a palindrome (25334643352).

The spelling of 13112322221 in words is "thirteen billion, one hundred twelve million, three hundred twenty-two thousand, two hundred twenty-one".