12221320121033 has 4 divisors (see below), whose sum is σ = 12233432431380. Its totient is φ = 12209207810688.

The previous prime is 12221320120967. The next prime is 12221320121077. The reversal of 12221320121033 is 33012102312221.

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 8816457439504 + 3404862681529 = 2969252^2 + 1845227^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221320121033 - 2⁸ = 12221320120777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221320121833) 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, 6056153660 + ... + 6056155677.

It is an arithmetic number, because the mean of its divisors is an integer number (3058358107845).

Almost surely, 2^{12221320121033} is an apocalyptic number.

It is an amenable number.

12221320121033 is a deficient number, since it is larger than the sum of its proper divisors (12112310347).

12221320121033 is a wasteful number, since it uses less digits than its factorization.

12221320121033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12112310346.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 12221320121033 its reverse (33012102312221), we get a palindrome (45233422433254).

The spelling of 12221320121033 in words is "twelve trillion, two hundred twenty-one billion, three hundred twenty million, one hundred twenty-one thousand, thirty-three".