13021000221 has 8 divisors (see below), whose sum is σ = 17655593760. Its totient is φ = 8533536752.

The previous prime is 13021000163. The next prime is 13021000241. The reversal of 13021000221 is 12200012031.

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 13021000221 - 2¹³ = 13020992029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13021000197 and 13021000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021000241) 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, 36782310 + ... + 36782663.

It is an arithmetic number, because the mean of its divisors is an integer number (2206949220).

Almost surely, 2^13021000221 is an apocalyptic number.

It is an amenable number.

13021000221 is a deficient number, since it is larger than the sum of its proper divisors (4634593539).

13021000221 is an equidigital number, since it uses as much as digits as its factorization.

13021000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73565035.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 13021000221 its reverse (12200012031), we get a palindrome (25221012252).

The spelling of 13021000221 in words is "thirteen billion, twenty-one million, two hundred twenty-one", and thus it is an aban number.