20799101 has 2 divisors, whose sum is σ = 20799102. Its totient is φ = 20799100.

The previous prime is 20799089. The next prime is 20799127. The reversal of 20799101 is 10199702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20748025 + 51076 = 4555^2 + 226^2 .

It is a cyclic number.

It is not a de Polignac number, because 20799101 - 2¹⁰ = 20798077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20799131) 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, 10399550 + 10399551.

It is an arithmetic number, because the mean of its divisors is an integer number (10399551).

Almost surely, 2^20799101 is an apocalyptic number.

It is an amenable number.

20799101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20799101 is an equidigital number, since it uses as much as digits as its factorization.

20799101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 20799101 is about 4560.6031399366. The cubic root of 20799101 is about 275.0098112202.

The spelling of 20799101 in words is "twenty million, seven hundred ninety-nine thousand, one hundred one".