221331223229 has 8 divisors (see below), whose sum is σ = 224320444920. Its totient is φ = 218359431936.

The previous prime is 221331223219. The next prime is 221331223237. The reversal of 221331223229 is 922322133122.

It can be written as a sum of positive squares in 4 ways, for example, as 30993602500 + 190337620729 = 176050^2 + 436277^2 .

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 221331223229 - 2⁴ = 221331223213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221331223195 and 221331223204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221331223219) 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, 4332032 + ... + 4382825.

It is an arithmetic number, because the mean of its divisors is an integer number (28040055615).

Almost surely, 2^221331223229 is an apocalyptic number.

It is an amenable number.

221331223229 is a deficient number, since it is larger than the sum of its proper divisors (2989221691).

221331223229 is a wasteful number, since it uses less digits than its factorization.

221331223229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8715199.

The product of its digits is 15552, while the sum is 32.

The spelling of 221331223229 in words is "two hundred twenty-one billion, three hundred thirty-one million, two hundred twenty-three thousand, two hundred twenty-nine".