13221430324132 has 24 divisors (see below), whose sum is σ = 23517539390520. Its totient is φ = 6502140111360.

The previous prime is 13221430324127. The next prime is 13221430324153. The reversal of 13221430324132 is 23142303412231.

It can be written as a sum of positive squares in 4 ways, for example, as 2277666529636 + 10943763794496 = 1509194^2 + 3308136^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13221430324094 and 13221430324103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7154844 + ... + 8811052.

It is an arithmetic number, because the mean of its divisors is an integer number (979897474605).

Almost surely, 2^{13221430324132} is an apocalyptic number.

It is an amenable number.

13221430324132 is a deficient number, since it is larger than the sum of its proper divisors (10296109066388).

13221430324132 is a wasteful number, since it uses less digits than its factorization.

13221430324132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688991 (or 1688989 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 13221430324132 its reverse (23142303412231), we get a palindrome (36363733736363).

The spelling of 13221430324132 in words is "thirteen trillion, two hundred twenty-one billion, four hundred thirty million, three hundred twenty-four thousand, one hundred thirty-two".