211223022313 has 2 divisors, whose sum is σ = 211223022314. Its totient is φ = 211223022312.

The previous prime is 211223022293. The next prime is 211223022319. The reversal of 211223022313 is 313220322112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163837133824 + 47385888489 = 404768^2 + 217683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211223022313 is a prime.

It is not a weakly prime, because it can be changed into another prime (211223022319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105611511156 + 105611511157.

It is an arithmetic number, because the mean of its divisors is an integer number (105611511157).

Almost surely, 2^211223022313 is an apocalyptic number.

It is an amenable number.

211223022313 is a deficient number, since it is larger than the sum of its proper divisors (1).

211223022313 is an equidigital number, since it uses as much as digits as its factorization.

211223022313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 211223022313 its reverse (313220322112), we get a palindrome (524443344425).

The spelling of 211223022313 in words is "two hundred eleven billion, two hundred twenty-three million, twenty-two thousand, three hundred thirteen".