221331300233 has 4 divisors (see below), whose sum is σ = 234350788500. Its totient is φ = 208311811968.

The previous prime is 221331300173. The next prime is 221331300271. The reversal of 221331300233 is 332003133122.

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 163532889664 + 57798410569 = 404392^2 + 240413^2 .

It is a cyclic number.

It is not a de Polignac number, because 221331300233 - 2²⁰ = 221330251657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221331300199 and 221331300208.

It is not an unprimeable number, because it can be changed into a prime (221331300283) 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, 6509744108 + ... + 6509744141.

It is an arithmetic number, because the mean of its divisors is an integer number (58587697125).

Almost surely, 2^221331300233 is an apocalyptic number.

It is an amenable number.

221331300233 is a deficient number, since it is larger than the sum of its proper divisors (13019488267).

221331300233 is a wasteful number, since it uses less digits than its factorization.

221331300233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13019488266.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 221331300233 its reverse (332003133122), we get a palindrome (553334433355).

The spelling of 221331300233 in words is "two hundred twenty-one billion, three hundred thirty-one million, three hundred thousand, two hundred thirty-three".