99012220001 has 2 divisors, whose sum is σ = 99012220002. Its totient is φ = 99012220000.

The previous prime is 99012219991. The next prime is 99012220049. The reversal of 99012220001 is 10002221099.

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., 65505283600 + 33506936401 = 255940^2 + 183049^2 .

It is a cyclic number.

It is not a de Polignac number, because 99012220001 - 2⁶ = 99012219937 is a prime.

It is not a weakly prime, because it can be changed into another prime (99012220091) 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, 49506110000 + 49506110001.

It is an arithmetic number, because the mean of its divisors is an integer number (49506110001).

Almost surely, 2^99012220001 is an apocalyptic number.

It is an amenable number.

99012220001 is a deficient number, since it is larger than the sum of its proper divisors (1).

99012220001 is an equidigital number, since it uses as much as digits as its factorization.

99012220001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 99012220001 in words is "ninety-nine billion, twelve million, two hundred twenty thousand, one".