212210211210223 has 4 divisors (see below), whose sum is σ = 212517317160568. Its totient is φ = 211903105259880.

The previous prime is 212210211210181. The next prime is 212210211210227. The reversal of 212210211210223 is 322012112012212.

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-212210211210223 is a prime.

It is a super-3 number, since 3×212210211210223³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212210211210194 and 212210211210203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212210211210227) 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, 153552974136 + ... + 153552975517.

It is an arithmetic number, because the mean of its divisors is an integer number (53129329290142).

Almost surely, 2^{212210211210223} is an apocalyptic number.

212210211210223 is a deficient number, since it is larger than the sum of its proper divisors (307105950345).

212210211210223 is an equidigital number, since it uses as much as digits as its factorization.

212210211210223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307105950344.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 212210211210223 its reverse (322012112012212), we get a palindrome (534222323222435).

The spelling of 212210211210223 in words is "two hundred twelve trillion, two hundred ten billion, two hundred eleven million, two hundred ten thousand, two hundred twenty-three".