13211223309 has 16 divisors (see below), whose sum is σ = 19580279040. Its totient is φ = 8803838880.

The previous prime is 13211223307. The next prime is 13211223313. The reversal of 13211223309 is 90332211231.

13211223309 is a `hidden beast` number, since 1 + 321 + 1 + 2 + 2 + 330 + 9 = 666.

It is not a de Polignac number, because 13211223309 - 2¹ = 13211223307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13211223307) 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, 33912 + ... + 166049.

It is an arithmetic number, because the mean of its divisors is an integer number (1223767440).

Almost surely, 2^13211223309 is an apocalyptic number.

It is an amenable number.

13211223309 is a deficient number, since it is larger than the sum of its proper divisors (6369055731).

13211223309 is a wasteful number, since it uses less digits than its factorization.

13211223309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202417 (or 202411 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 13211223309 in words is "thirteen billion, two hundred eleven million, two hundred twenty-three thousand, three hundred nine".