12210320320121 has 16 divisors (see below), whose sum is σ = 15278214134400. Its totient is φ = 9480186794880.

The previous prime is 12210320320073. The next prime is 12210320320141. The reversal of 12210320320121 is 12102302301221.

It is a cyclic number.

It is not a de Polignac number, because 12210320320121 - 2¹⁰ = 12210320319097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12210320320093 and 12210320320102.

It is not an unprimeable number, because it can be changed into a prime (12210320320141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286216196 + ... + 286258853.

It is an arithmetic number, because the mean of its divisors is an integer number (954888383400).

Almost surely, 2^{12210320320121} is an apocalyptic number.

12210320320121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12210320320121 is a deficient number, since it is larger than the sum of its proper divisors (3067893814279).

12210320320121 is a wasteful number, since it uses less digits than its factorization.

12210320320121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572475344.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12210320320121 its reverse (12102302301221), we get a palindrome (24312622621342).

The spelling of 12210320320121 in words is "twelve trillion, two hundred ten billion, three hundred twenty million, three hundred twenty thousand, one hundred twenty-one".