211243102223 has 4 divisors (see below), whose sum is σ = 211244120880. Its totient is φ = 211242083568.

The previous prime is 211243102207. The next prime is 211243102237. The reversal of 211243102223 is 322201342112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 211243102223 - 2⁴ = 211243102207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211243102243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74558 + ... + 654251.

It is an arithmetic number, because the mean of its divisors is an integer number (52811030220).

Almost surely, 2^211243102223 is an apocalyptic number.

211243102223 is a deficient number, since it is larger than the sum of its proper divisors (1018657).

211243102223 is an equidigital number, since it uses as much as digits as its factorization.

211243102223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018656.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 211243102223 its reverse (322201342112), we get a palindrome (533444444335).

The spelling of 211243102223 in words is "two hundred eleven billion, two hundred forty-three million, one hundred two thousand, two hundred twenty-three".