99466613221 has 2 divisors, whose sum is σ = 99466613222. Its totient is φ = 99466613220.

The previous prime is 99466613219. The next prime is 99466613249. The reversal of 99466613221 is 12231666499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65733780996 + 33732832225 = 256386^2 + 183665^2 .

It is a cyclic number.

It is not a de Polignac number, because 99466613221 - 2¹ = 99466613219 is a prime.

Together with 99466613219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99466613261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49733306610 + 49733306611.

It is an arithmetic number, because the mean of its divisors is an integer number (49733306611).

Almost surely, 2^99466613221 is an apocalyptic number.

It is an amenable number.

99466613221 is a deficient number, since it is larger than the sum of its proper divisors (1).

99466613221 is an equidigital number, since it uses as much as digits as its factorization.

99466613221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The spelling of 99466613221 in words is "ninety-nine billion, four hundred sixty-six million, six hundred thirteen thousand, two hundred twenty-one".