99012221213 has 2 divisors, whose sum is σ = 99012221214. Its totient is φ = 99012221212.

The previous prime is 99012221207. The next prime is 99012221257. The reversal of 99012221213 is 31212221099.

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., 67090324324 + 31921896889 = 259018^2 + 178667^2 .

It is a cyclic number.

It is not a de Polignac number, because 99012221213 - 2¹⁰ = 99012220189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99012221213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99012221813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49506110606 + 49506110607.

It is an arithmetic number, because the mean of its divisors is an integer number (49506110607).

Almost surely, 2^99012221213 is an apocalyptic number.

It is an amenable number.

99012221213 is a deficient number, since it is larger than the sum of its proper divisors (1).

99012221213 is an equidigital number, since it uses as much as digits as its factorization.

99012221213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 99012221213 in words is "ninety-nine billion, twelve million, two hundred twenty-one thousand, two hundred thirteen".