12231220321301 has 4 divisors (see below), whose sum is σ = 12529542768204. Its totient is φ = 11932897874400.

The previous prime is 12231220321291. The next prime is 12231220321433. The reversal of 12231220321301 is 10312302213221.

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 5562998677201 + 6668221644100 = 2358601^2 + 2582290^2 .

It is a cyclic number.

It is not a de Polignac number, because 12231220321301 - 2³⁰ = 12230146579477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231222321301) 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, 149161223390 + ... + 149161223471.

It is an arithmetic number, because the mean of its divisors is an integer number (3132385692051).

Almost surely, 2^{12231220321301} is an apocalyptic number.

It is an amenable number.

12231220321301 is a deficient number, since it is larger than the sum of its proper divisors (298322446903).

12231220321301 is an equidigital number, since it uses as much as digits as its factorization.

12231220321301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298322446902.

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

Adding to 12231220321301 its reverse (10312302213221), we get a palindrome (22543522534522).

The spelling of 12231220321301 in words is "twelve trillion, two hundred thirty-one billion, two hundred twenty million, three hundred twenty-one thousand, three hundred one".