211223021323 has 2 divisors, whose sum is σ = 211223021324. Its totient is φ = 211223021322.

The previous prime is 211223021309. The next prime is 211223021351. The reversal of 211223021323 is 323120322112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211223021323 - 2³³ = 202633086731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211223021294 and 211223021303.

It is not a weakly prime, because it can be changed into another prime (211223022323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105611510661 + 105611510662.

It is an arithmetic number, because the mean of its divisors is an integer number (105611510662).

Almost surely, 2^211223021323 is an apocalyptic number.

211223021323 is a deficient number, since it is larger than the sum of its proper divisors (1).

211223021323 is an equidigital number, since it uses as much as digits as its factorization.

211223021323 is an odious number, because the sum of its binary digits is odd.

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

Adding to 211223021323 its reverse (323120322112), we get a palindrome (534343343435).

The spelling of 211223021323 in words is "two hundred eleven billion, two hundred twenty-three million, twenty-one thousand, three hundred twenty-three".