1099269221 has 2 divisors, whose sum is σ = 1099269222. Its totient is φ = 1099269220.

The previous prime is 1099269217. The next prime is 1099269239. The reversal of 1099269221 is 1229629901.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 923308996 + 175960225 = 30386^2 + 13265^2 .

It is a cyclic number.

It is not a de Polignac number, because 1099269221 - 2² = 1099269217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1099269271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549634610 + 549634611.

It is an arithmetic number, because the mean of its divisors is an integer number (549634611).

Almost surely, 2^1099269221 is an apocalyptic number.

It is an amenable number.

1099269221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099269221 is an equidigital number, since it uses as much as digits as its factorization.

1099269221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 1099269221 is about 33155.2291652463. The cubic root of 1099269221 is about 1032.0514682607.

The spelling of 1099269221 in words is "one billion, ninety-nine million, two hundred sixty-nine thousand, two hundred twenty-one".