13011000221 has 4 divisors (see below), whose sum is σ = 13011288000. Its totient is φ = 13010712444.

The previous prime is 13011000217. The next prime is 13011000251. The reversal of 13011000221 is 12200011031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12200011031 = 13 ⋅938462387.

It is a cyclic number.

It is not a de Polignac number, because 13011000221 - 2² = 13011000217 is a prime.

It is a super-2 number, since 2×13011000221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13011000251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59621 + ... + 171978.

It is an arithmetic number, because the mean of its divisors is an integer number (3252822000).

Almost surely, 2^13011000221 is an apocalyptic number.

It is an amenable number.

13011000221 is a deficient number, since it is larger than the sum of its proper divisors (287779).

13011000221 is an equidigital number, since it uses as much as digits as its factorization.

13011000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287778.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 13011000221 its reverse (12200011031), we get a palindrome (25211011252).

The spelling of 13011000221 in words is "thirteen billion, eleven million, two hundred twenty-one", and thus it is an aban number.