1089422221 has 2 divisors, whose sum is σ = 1089422222. Its totient is φ = 1089422220.

The previous prime is 1089422179. The next prime is 1089422231. The reversal of 1089422221 is 1222249801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 965344900 + 124077321 = 31070^2 + 11139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1089422221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1089422231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544711110 + 544711111.

It is an arithmetic number, because the mean of its divisors is an integer number (544711111).

Almost surely, 2^1089422221 is an apocalyptic number.

It is an amenable number.

1089422221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089422221 is an equidigital number, since it uses as much as digits as its factorization.

1089422221 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 31.

The square root of 1089422221 is about 33006.3966679188. The cubic root of 1089422221 is about 1028.9605944004.

The spelling of 1089422221 in words is "one billion, eighty-nine million, four hundred twenty-two thousand, two hundred twenty-one".