13221923382 has 40 divisors (see below), whose sum is σ = 30915037296. Its totient is φ = 4215684528.

The previous prime is 13221923381. The next prime is 13221923411. The reversal of 13221923382 is 28332912231.

It is a happy number.

13221923382 is a `hidden beast` number, since 13 + 221 + 92 + 338 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221923381) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1770553 + ... + 1778004.

Almost surely, 2^13221923382 is an apocalyptic number.

13221923382 is an abundant number, since it is smaller than the sum of its proper divisors (17693113914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13221923382 is a wasteful number, since it uses less digits than its factorization.

13221923382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3548594 (or 3548585 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The spelling of 13221923382 in words is "thirteen billion, two hundred twenty-one million, nine hundred twenty-three thousand, three hundred eighty-two".