221088233 has 2 divisors, whose sum is σ = 221088234. Its totient is φ = 221088232.

The previous prime is 221088227. The next prime is 221088299. The reversal of 221088233 is 332880122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134281744 + 86806489 = 11588^2 + 9317^2 .

It is a cyclic number.

It is not a de Polignac number, because 221088233 - 2¹⁴ = 221071849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221088196 and 221088205.

It is not a weakly prime, because it can be changed into another prime (221088223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110544116 + 110544117.

It is an arithmetic number, because the mean of its divisors is an integer number (110544117).

Almost surely, 2^221088233 is an apocalyptic number.

It is an amenable number.

221088233 is a deficient number, since it is larger than the sum of its proper divisors (1).

221088233 is an equidigital number, since it uses as much as digits as its factorization.

221088233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 221088233 is about 14869.0360481102. The cubic root of 221088233 is about 604.6748091887.

The spelling of 221088233 in words is "two hundred twenty-one million, eighty-eight thousand, two hundred thirty-three".