2101099601 has 2 divisors, whose sum is σ = 2101099602. Its totient is φ = 2101099600.

The previous prime is 2101099597. The next prime is 2101099607. The reversal of 2101099601 is 1069901012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2088490000 + 12609601 = 45700^2 + 3551^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101099601 - 2² = 2101099597 is a prime.

It is not a weakly prime, because it can be changed into another prime (2101099607) 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, 1050549800 + 1050549801.

It is an arithmetic number, because the mean of its divisors is an integer number (1050549801).

Almost surely, 2^2101099601 is an apocalyptic number.

It is an amenable number.

2101099601 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101099601 is an equidigital number, since it uses as much as digits as its factorization.

2101099601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 2101099601 is about 45837.7530099371. The cubic root of 2101099601 is about 1280.8026380713.

The spelling of 2101099601 in words is "two billion, one hundred one million, ninety-nine thousand, six hundred one".