221011331223 has 8 divisors (see below), whose sum is σ = 304843215600. Its totient is φ = 142260167168.

The previous prime is 221011331179. The next prime is 221011331263. The reversal of 221011331223 is 322133110122.

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

It is a cyclic number.

It is not a de Polignac number, because 221011331223 - 2¹² = 221011327127 is a prime.

It is a super-2 number, since 2×221011331223² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221011331223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011331263) 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, 1270179978 + ... + 1270180151.

It is an arithmetic number, because the mean of its divisors is an integer number (38105401950).

Almost surely, 2^221011331223 is an apocalyptic number.

221011331223 is a deficient number, since it is larger than the sum of its proper divisors (83831884377).

221011331223 is a wasteful number, since it uses less digits than its factorization.

221011331223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540360161.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 221011331223 its reverse (322133110122), we get a palindrome (543144441345).

The spelling of 221011331223 in words is "two hundred twenty-one billion, eleven million, three hundred thirty-one thousand, two hundred twenty-three".