213122102223 has 4 divisors (see below), whose sum is σ = 284162802968. Its totient is φ = 142081401480.

The previous prime is 213122102209. The next prime is 213122102293. The reversal of 213122102223 is 322201221312.

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

It is not a de Polignac number, because 213122102223 - 2⁶ = 213122102159 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 213122102223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213122102293) 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, 35520350368 + ... + 35520350373.

It is an arithmetic number, because the mean of its divisors is an integer number (71040700742).

Almost surely, 2^213122102223 is an apocalyptic number.

213122102223 is a deficient number, since it is larger than the sum of its proper divisors (71040700745).

213122102223 is an equidigital number, since it uses as much as digits as its factorization.

213122102223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71040700744.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 213122102223 its reverse (322201221312), we get a palindrome (535323323535).

The spelling of 213122102223 in words is "two hundred thirteen billion, one hundred twenty-two million, one hundred two thousand, two hundred twenty-three".