212201221311321 has 16 divisors (see below), whose sum is σ = 308657581417920. Its totient is φ = 128606275998720.

The previous prime is 212201221311283. The next prime is 212201221311389. The reversal of 212201221311321 is 123113122102212.

It is not a de Polignac number, because 212201221311321 - 2²² = 212201217117017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212201221311291 and 212201221311300.

It is not an unprimeable number, because it can be changed into a prime (212201221321321) 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, 4832236 + ... + 21160173.

It is an arithmetic number, because the mean of its divisors is an integer number (19291098838620).

Almost surely, 2^{212201221311321} is an apocalyptic number.

It is an amenable number.

212201221311321 is a deficient number, since it is larger than the sum of its proper divisors (96456360106599).

212201221311321 is a wasteful number, since it uses less digits than its factorization.

212201221311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26239816.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 212201221311321 its reverse (123113122102212), we get a palindrome (335314343413533).

The spelling of 212201221311321 in words is "two hundred twelve trillion, two hundred one billion, two hundred twenty-one million, three hundred eleven thousand, three hundred twenty-one".