9411221999 has 2 divisors, whose sum is σ = 9411222000. Its totient is φ = 9411221998.

The previous prime is 9411221957. The next prime is 9411222019. The reversal of 9411221999 is 9991221149.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9411221999 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9411221929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4705610999 + 4705611000.

It is an arithmetic number, because the mean of its divisors is an integer number (4705611000).

Almost surely, 2^9411221999 is an apocalyptic number.

9411221999 is a deficient number, since it is larger than the sum of its proper divisors (1).

9411221999 is an equidigital number, since it uses as much as digits as its factorization.

9411221999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 47.

The square root of 9411221999 is about 97011.4529269612. The cubic root of 9411221999 is about 2111.2938014949.

The spelling of 9411221999 in words is "nine billion, four hundred eleven million, two hundred twenty-one thousand, nine hundred ninety-nine".