221333111233 has 4 divisors (see below), whose sum is σ = 238358735188. Its totient is φ = 204307487280.

The previous prime is 221333111191. The next prime is 221333111249. The reversal of 221333111233 is 332111333122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 332111333122 = 2 ⋅166055666561.

It can be written as a sum of positive squares in 2 ways, for example, as 83626807489 + 137706303744 = 289183^2 + 371088^2 .

It is not a de Polignac number, because 221333111233 - 2¹³ = 221333103041 is a prime.

It is a super-2 number, since 2×221333111233² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221333111198 and 221333111207.

It is not an unprimeable number, because it can be changed into a prime (221333112233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8512811958 + ... + 8512811983.

It is an arithmetic number, because the mean of its divisors is an integer number (59589683797).

Almost surely, 2^221333111233 is an apocalyptic number.

It is an amenable number.

221333111233 is a deficient number, since it is larger than the sum of its proper divisors (17025623955).

221333111233 is a wasteful number, since it uses less digits than its factorization.

221333111233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17025623954.

The product of its digits is 1944, while the sum is 25.

Adding to 221333111233 its reverse (332111333122), we get a palindrome (553444444355).

The spelling of 221333111233 in words is "two hundred twenty-one billion, three hundred thirty-three million, one hundred eleven thousand, two hundred thirty-three".