221210101223 has 4 divisors (see below), whose sum is σ = 221224418760. Its totient is φ = 221195783688.

The previous prime is 221210101213. The next prime is 221210101241. The reversal of 221210101223 is 322101012122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322101012122 = 2 ⋅161050506061.

It is a cyclic number.

It is not a de Polignac number, because 221210101223 - 2¹⁶ = 221210035687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221210101213) 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, 7135568 + ... + 7166501.

It is an arithmetic number, because the mean of its divisors is an integer number (55306104690).

Almost surely, 2^221210101223 is an apocalyptic number.

221210101223 is a deficient number, since it is larger than the sum of its proper divisors (14317537).

221210101223 is a wasteful number, since it uses less digits than its factorization.

221210101223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14317536.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 221210101223 its reverse (322101012122), we get a palindrome (543311113345).

The spelling of 221210101223 in words is "two hundred twenty-one billion, two hundred ten million, one hundred one thousand, two hundred twenty-three".