13220032021 has 8 divisors (see below), whose sum is σ = 15903798080. Its totient is φ = 10735063488.

The previous prime is 13220031971. The next prime is 13220032073. The reversal of 13220032021 is 12023002231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13220032021 - 2⁷ = 13220031893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13220031986 and 13220032004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220032121) by changing a digit.

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, 49699236 + ... + 49699501.

It is an arithmetic number, because the mean of its divisors is an integer number (1987974760).

Almost surely, 2^13220032021 is an apocalyptic number.

It is an amenable number.

13220032021 is a deficient number, since it is larger than the sum of its proper divisors (2683766059).

13220032021 is an equidigital number, since it uses as much as digits as its factorization.

13220032021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99398763.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 13220032021 its reverse (12023002231), we get a palindrome (25243034252).

The spelling of 13220032021 in words is "thirteen billion, two hundred twenty million, thirty-two thousand, twenty-one".