221213312223 has 8 divisors (see below), whose sum is σ = 295073124528. Its totient is φ = 147414520704.

The previous prime is 221213312213. The next prime is 221213312237. The reversal of 221213312223 is 322213312122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221213312223 - 2¹⁰ = 221213311199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221213312193 and 221213312202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221213312213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15246736 + ... + 15261237.

It is an arithmetic number, because the mean of its divisors is an integer number (36884140566).

Almost surely, 2^221213312223 is an apocalyptic number.

221213312223 is a deficient number, since it is larger than the sum of its proper divisors (73859812305).

221213312223 is a wasteful number, since it uses less digits than its factorization.

221213312223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30510393.

The product of its digits is 1728, while the sum is 24.

Adding to 221213312223 its reverse (322213312122), we get a palindrome (543426624345).

The spelling of 221213312223 in words is "two hundred twenty-one billion, two hundred thirteen million, three hundred twelve thousand, two hundred twenty-three".