221103229 has 2 divisors, whose sum is σ = 221103230. Its totient is φ = 221103228.

The previous prime is 221103217. The next prime is 221103251. The reversal of 221103229 is 922301122.

It is an a-pointer prime, because the next prime (221103251) can be obtained adding 221103229 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140067225 + 81036004 = 11835^2 + 9002^2 .

It is a cyclic number.

It is not a de Polignac number, because 221103229 - 2¹³ = 221095037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221103299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110551614 + 110551615.

It is an arithmetic number, because the mean of its divisors is an integer number (110551615).

Almost surely, 2^221103229 is an apocalyptic number.

It is an amenable number.

221103229 is a deficient number, since it is larger than the sum of its proper divisors (1).

221103229 is an equidigital number, since it uses as much as digits as its factorization.

221103229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 221103229 is about 14869.5403089672. The cubic root of 221103229 is about 604.6884801988.

The spelling of 221103229 in words is "two hundred twenty-one million, one hundred three thousand, two hundred twenty-nine".