212001311320321 has 4 divisors (see below), whose sum is σ = 212007894630832. Its totient is φ = 211994728009812.

The previous prime is 212001311320307. The next prime is 212001311320333. The reversal of 212001311320321 is 123023113100212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212001311320321 - 2¹³ = 212001311312129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212001311320292 and 212001311320301.

It is not an unprimeable number, because it can be changed into a prime (212001311320121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3291606951 + ... + 3291671356.

It is an arithmetic number, because the mean of its divisors is an integer number (53001973657708).

Almost surely, 2^{212001311320321} is an apocalyptic number.

It is an amenable number.

212001311320321 is a deficient number, since it is larger than the sum of its proper divisors (6583310511).

212001311320321 is an equidigital number, since it uses as much as digits as its factorization.

212001311320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6583310510.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 212001311320321 its reverse (123023113100212), we get a palindrome (335024424420533).

The spelling of 212001311320321 in words is "two hundred twelve trillion, one billion, three hundred eleven million, three hundred twenty thousand, three hundred twenty-one".