13221073989 has 32 divisors (see below), whose sum is σ = 19765119360. Its totient is φ = 8734137984.

The previous prime is 13221073963. The next prime is 13221073997. The reversal of 13221073989 is 98937012231.

It is not a de Polignac number, because 13221073989 - 2⁷ = 13221073861 is a prime.

It is a super-2 number, since 2×13221073989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221073919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1457502 + ... + 1466544.

It is an arithmetic number, because the mean of its divisors is an integer number (617659980).

Almost surely, 2^13221073989 is an apocalyptic number.

It is an amenable number.

13221073989 is a deficient number, since it is larger than the sum of its proper divisors (6544045371).

13221073989 is a wasteful number, since it uses less digits than its factorization.

13221073989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9538 (or 9532 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

It can be divided in two parts, 1322 and 1073989, that added together give a triangular number (1075311 = T₁₄₆₆).

The spelling of 13221073989 in words is "thirteen billion, two hundred twenty-one million, seventy-three thousand, nine hundred eighty-nine".