211012221223 has 6 divisors (see below), whose sum is σ = 220585555064. Its totient is φ = 201837776316.

The previous prime is 211012221191. The next prime is 211012221271. The reversal of 211012221223 is 322122210112.

211012221223 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 211012221223 - 2⁵ = 211012221191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211012221223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012225223) 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 5 ways as a sum of consecutive naturals, for example, 199443915 + ... + 199444972.

Almost surely, 2^211012221223 is an apocalyptic number.

211012221223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

211012221223 is a deficient number, since it is larger than the sum of its proper divisors (9573333841).

211012221223 is an equidigital number, since it uses as much as digits as its factorization.

211012221223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398888933 (or 398888910 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 211012221223 its reverse (322122210112), we get a palindrome (533134431335).

The spelling of 211012221223 in words is "two hundred eleven billion, twelve million, two hundred twenty-one thousand, two hundred twenty-three".