211223032213 has 2 divisors, whose sum is σ = 211223032214. Its totient is φ = 211223032212.

The previous prime is 211223032183. The next prime is 211223032247. The reversal of 211223032213 is 312230322112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165224364484 + 45998667729 = 406478^2 + 214473^2 .

It is a cyclic number.

It is not a de Polignac number, because 211223032213 - 2¹³ = 211223024021 is a prime.

It is a super-3 number, since 3×211223032213³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211223032613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105611516106 + 105611516107.

It is an arithmetic number, because the mean of its divisors is an integer number (105611516107).

Almost surely, 2^211223032213 is an apocalyptic number.

It is an amenable number.

211223032213 is a deficient number, since it is larger than the sum of its proper divisors (1).

211223032213 is an equidigital number, since it uses as much as digits as its factorization.

211223032213 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 211223032213 its reverse (312230322112), we get a palindrome (523453354325).

The spelling of 211223032213 in words is "two hundred eleven billion, two hundred twenty-three million, thirty-two thousand, two hundred thirteen".