220243229 has 2 divisors, whose sum is σ = 220243230. Its totient is φ = 220243228.

The previous prime is 220243223. The next prime is 220243237. The reversal of 220243229 is 922342022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188320729 + 31922500 = 13723^2 + 5650^2 .

It is a cyclic number.

It is not a de Polignac number, because 220243229 - 2²⁰ = 219194653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220243198 and 220243207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220243223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110121614 + 110121615.

It is an arithmetic number, because the mean of its divisors is an integer number (110121615).

Almost surely, 2^220243229 is an apocalyptic number.

It is an amenable number.

220243229 is a deficient number, since it is larger than the sum of its proper divisors (1).

220243229 is an equidigital number, since it uses as much as digits as its factorization.

220243229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 220243229 is about 14840.5939571164. The cubic root of 220243229 is about 603.9034655964.

The spelling of 220243229 in words is "two hundred twenty million, two hundred forty-three thousand, two hundred twenty-nine".