13020022221 has 8 divisors (see below), whose sum is σ = 17361825024. Its totient is φ = 8679117120.

The previous prime is 13020022217. The next prime is 13020022247. The reversal of 13020022221 is 12222002031.

It is a happy number.

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

It is not a de Polignac number, because 13020022221 - 2² = 13020022217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13020022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020022261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189820 + ... + 249141.

It is an arithmetic number, because the mean of its divisors is an integer number (2170228128).

Almost surely, 2^13020022221 is an apocalyptic number.

It is an amenable number.

13020022221 is a deficient number, since it is larger than the sum of its proper divisors (4341802803).

13020022221 is an equidigital number, since it uses as much as digits as its factorization.

13020022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448851.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 13020022221 its reverse (12222002031), we get a palindrome (25242024252).

The spelling of 13020022221 in words is "thirteen billion, twenty million, twenty-two thousand, two hundred twenty-one".