13222571397 has 16 divisors (see below), whose sum is σ = 20150287872. Its totient is φ = 7555152240.

The previous prime is 13222571347. The next prime is 13222571441. The reversal of 13222571397 is 79317522231.

It is a happy number.

It is not a de Polignac number, because 13222571397 - 2¹⁵ = 13222538629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13222571347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490258 + ... + 516524.

It is an arithmetic number, because the mean of its divisors is an integer number (1259392992).

Almost surely, 2^13222571397 is an apocalyptic number.

It is an amenable number.

13222571397 is a deficient number, since it is larger than the sum of its proper divisors (6927716475).

13222571397 is a wasteful number, since it uses less digits than its factorization.

13222571397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50248.

The product of its digits is 158760, while the sum is 42.

The spelling of 13222571397 in words is "thirteen billion, two hundred twenty-two million, five hundred seventy-one thousand, three hundred ninety-seven".