13221212319 has 12 divisors (see below), whose sum is σ = 21825493456. Its totient is φ = 7554978432.

The previous prime is 13221212311. The next prime is 13221212321. The reversal of 13221212319 is 91321212231.

13221212319 is a `hidden beast` number, since 1 + 322 + 1 + 21 + 2 + 319 = 666.

It is not a de Polignac number, because 13221212319 - 2³ = 13221212311 is a prime.

It is a super-2 number, since 2×13221212319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13221212292 and 13221212301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221212311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104930194 + ... + 104930319.

Almost surely, 2^13221212319 is an apocalyptic number.

13221212319 is a deficient number, since it is larger than the sum of its proper divisors (8604281137).

13221212319 is a wasteful number, since it uses less digits than its factorization.

13221212319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209860526 (or 209860523 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The spelling of 13221212319 in words is "thirteen billion, two hundred twenty-one million, two hundred twelve thousand, three hundred nineteen".