212113001320321 has 4 divisors (see below), whose sum is σ = 217286489157444. Its totient is φ = 206939513483200.

The previous prime is 212113001320291. The next prime is 212113001320369. The reversal of 212113001320321 is 123023100311212.

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 17652904759296 + 194460096561025 = 4201536^2 + 13944895^2 .

It is a cyclic number.

It is not a de Polignac number, because 212113001320321 - 2¹⁷ = 212113001189249 is a prime.

It is a super-2 number, since 2×212113001320321² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212113001320292 and 212113001320301.

It is not an unprimeable number, because it can be changed into a prime (212113001320921) 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, 2586743918500 + ... + 2586743918581.

It is an arithmetic number, because the mean of its divisors is an integer number (54321622289361).

Almost surely, 2^{212113001320321} is an apocalyptic number.

It is an amenable number.

212113001320321 is a deficient number, since it is larger than the sum of its proper divisors (5173487837123).

212113001320321 is an equidigital number, since it uses as much as digits as its factorization.

212113001320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5173487837122.

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

Adding to 212113001320321 its reverse (123023100311212), we get a palindrome (335136101631533).

The spelling of 212113001320321 in words is "two hundred twelve trillion, one hundred thirteen billion, one million, three hundred twenty thousand, three hundred twenty-one".