223231301221 has 4 divisors (see below), whose sum is σ = 236362554252. Its totient is φ = 210100048192.

The previous prime is 223231301219. The next prime is 223231301239. The reversal of 223231301221 is 122103132322.

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

It can be written as a sum of positive squares in 2 ways, for example, as 201276952321 + 21954348900 = 448639^2 + 148170^2 .

It is a cyclic number.

It is not a de Polignac number, because 223231301221 - 2¹ = 223231301219 is a prime.

It is a super-3 number, since 3×223231301221³ (a number of 35 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 = 223231301192 and 223231301201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223231331221) 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, 6565626490 + ... + 6565626523.

It is an arithmetic number, because the mean of its divisors is an integer number (59090638563).

Almost surely, 2^223231301221 is an apocalyptic number.

It is an amenable number.

223231301221 is a deficient number, since it is larger than the sum of its proper divisors (13131253031).

223231301221 is a wasteful number, since it uses less digits than its factorization.

223231301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13131253030.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 223231301221 its reverse (122103132322), we get a palindrome (345334433543).

The spelling of 223231301221 in words is "two hundred twenty-three billion, two hundred thirty-one million, three hundred one thousand, two hundred twenty-one".