211222220323 has 4 divisors (see below), whose sum is σ = 211243962960. Its totient is φ = 211200477688.

The previous prime is 211222220263. The next prime is 211222220387. The reversal of 211222220323 is 323022222112.

211222220323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211222220323 is a prime.

It is a super-2 number, since 2×211222220323² (a number of 23 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 = 211222220294 and 211222220303.

It is not an unprimeable number, because it can be changed into a prime (211222220023) 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, 10856740 + ... + 10876177.

It is an arithmetic number, because the mean of its divisors is an integer number (52810990740).

Almost surely, 2^211222220323 is an apocalyptic number.

211222220323 is a deficient number, since it is larger than the sum of its proper divisors (21742637).

211222220323 is an equidigital number, since it uses as much as digits as its factorization.

211222220323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21742636.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 211222220323 its reverse (323022222112), we get a palindrome (534244442435).

The spelling of 211222220323 in words is "two hundred eleven billion, two hundred twenty-two million, two hundred twenty thousand, three hundred twenty-three".