13010331212221 has 4 divisors (see below), whose sum is σ = 14868949956832. Its totient is φ = 11151712467612.

The previous prime is 13010331212201. The next prime is 13010331212317. The reversal of 13010331212221 is 12221213301031.

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 a cyclic number.

It is not a de Polignac number, because 13010331212221 - 2⁴³ = 4214238190013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13010331212192 and 13010331212201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13010331212201) 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, 929309372295 + ... + 929309372308.

It is an arithmetic number, because the mean of its divisors is an integer number (3717237489208).

Almost surely, 2^{13010331212221} is an apocalyptic number.

It is an amenable number.

13010331212221 is a deficient number, since it is larger than the sum of its proper divisors (1858618744611).

13010331212221 is an equidigital number, since it uses as much as digits as its factorization.

13010331212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858618744610.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 13010331212221 its reverse (12221213301031), we get a palindrome (25231544513252).

The spelling of 13010331212221 in words is "thirteen trillion, ten billion, three hundred thirty-one million, two hundred twelve thousand, two hundred twenty-one".