13103221000 has 64 divisors (see below), whose sum is σ = 30793679280. Its totient is φ = 5218700800.

The previous prime is 13103220953. The next prime is 13103221007. The reversal of 13103221000 is 12230131.

It can be written as a sum of positive squares in 8 ways, for example, as 23639044 + 13079581956 = 4862^2 + 114366^2 .

It is not an unprimeable number, because it can be changed into a prime (13103221007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204882 + ... + 261118.

Almost surely, 2^13103221000 is an apocalyptic number.

13103221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13103221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15396839640).

13103221000 is an abundant number, since it is smaller than the sum of its proper divisors (17690458280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13103221000 is a wasteful number, since it uses less digits than its factorization.

13103221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56491 (or 56477 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 13103221000 its reverse (12230131), we get a palindrome (13115451131).

The spelling of 13103221000 in words is "thirteen billion, one hundred three million, two hundred twenty-one thousand".