13221213032 has 8 divisors (see below), whose sum is σ = 24789774450. Its totient is φ = 6610606512.

The previous prime is 13221213007. The next prime is 13221213041. The reversal of 13221213032 is 23031212231.

It can be written as a sum of positive squares in only one way, i.e., 12944523076 + 276689956 = 113774^2 + 16634^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 13221212995 and 13221213013.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826325807 + ... + 826325822.

Almost surely, 2^13221213032 is an apocalyptic number.

It is an amenable number.

13221213032 is a deficient number, since it is larger than the sum of its proper divisors (11568561418).

13221213032 is a wasteful number, since it uses less digits than its factorization.

13221213032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652651635 (or 1652651631 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13221213032 its reverse (23031212231), we get a palindrome (36252425263).

The spelling of 13221213032 in words is "thirteen billion, two hundred twenty-one million, two hundred thirteen thousand, thirty-two".