9200220221 has 2 divisors, whose sum is σ = 9200220222. Its totient is φ = 9200220220.

The previous prime is 9200220209. The next prime is 9200220251. The reversal of 9200220221 is 1220220029.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4842768100 + 4357452121 = 69590^2 + 66011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9200220221 is a prime.

It is a super-2 number, since 2×9200220221² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9200220193 and 9200220202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9200220251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4600110110 + 4600110111.

It is an arithmetic number, because the mean of its divisors is an integer number (4600110111).

Almost surely, 2^9200220221 is an apocalyptic number.

It is an amenable number.

9200220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

9200220221 is an equidigital number, since it uses as much as digits as its factorization.

9200220221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 9200220221 is about 95917.7784407041. The cubic root of 9200220221 is about 2095.3958252853.

The spelling of 9200220221 in words is "nine billion, two hundred million, two hundred twenty thousand, two hundred twenty-one".