211121111210223 has 24 divisors (see below), whose sum is σ = 314565983554608. Its totient is φ = 125496140398848.

The previous prime is 211121111210213. The next prime is 211121111210327. The reversal of 211121111210223 is 322012111121112.

211121111210223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211121111210223 - 2⁹ = 211121111209711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211121111210223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121111210213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5733540636 + ... + 5733577457.

It is an arithmetic number, because the mean of its divisors is an integer number (13106915981442).

Almost surely, 2^{211121111210223} is an apocalyptic number.

211121111210223 is a deficient number, since it is larger than the sum of its proper divisors (103444872344385).

211121111210223 is a wasteful number, since it uses less digits than its factorization.

211121111210223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11467118151 (or 11467118132 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 211121111210223 its reverse (322012111121112), we get a palindrome (533133222331335).

The spelling of 211121111210223 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred eleven million, two hundred ten thousand, two hundred twenty-three".