12211310011321 has 4 divisors (see below), whose sum is σ = 12211482147700. Its totient is φ = 12211137874944.

The previous prime is 12211310011289. The next prime is 12211310011333. The reversal of 12211310011321 is 12311001311221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1585242156096 + 10626067855225 = 1259064^2 + 3259765^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211310011321 - 2⁵ = 12211310011289 is a prime.

It is a super-2 number, since 2×12211310011321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211310011361) 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, 85961736 + ... + 86103673.

It is an arithmetic number, because the mean of its divisors is an integer number (3052870536925).

Almost surely, 2^{12211310011321} is an apocalyptic number.

It is an amenable number.

12211310011321 is a deficient number, since it is larger than the sum of its proper divisors (172136379).

12211310011321 is an equidigital number, since it uses as much as digits as its factorization.

12211310011321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172136378.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 12211310011321 its reverse (12311001311221), we get a palindrome (24522311322542).

The spelling of 12211310011321 in words is "twelve trillion, two hundred eleven billion, three hundred ten million, eleven thousand, three hundred twenty-one".