13000311132221 has 4 divisors (see below), whose sum is σ = 14857498436832. Its totient is φ = 11143123827612.

The previous prime is 13000311132181. The next prime is 13000311132257. The reversal of 13000311132221 is 12223111300031.

It is a happy number.

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.

It is not a de Polignac number, because 13000311132221 - 2⁶ = 13000311132157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13000311132193 and 13000311132202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13000311122221) 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, 928593652295 + ... + 928593652308.

It is an arithmetic number, because the mean of its divisors is an integer number (3714374609208).

Almost surely, 2^{13000311132221} is an apocalyptic number.

It is an amenable number.

13000311132221 is a deficient number, since it is larger than the sum of its proper divisors (1857187304611).

13000311132221 is an equidigital number, since it uses as much as digits as its factorization.

13000311132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857187304610.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 13000311132221 its reverse (12223111300031), we get a palindrome (25223422432252).

The spelling of 13000311132221 in words is "thirteen trillion, three hundred eleven million, one hundred thirty-two thousand, two hundred twenty-one".