720099101 has 2 divisors, whose sum is σ = 720099102. Its totient is φ = 720099100.

The previous prime is 720099067. The next prime is 720099131. The reversal of 720099101 is 101990027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429567076 + 290532025 = 20726^2 + 17045^2 .

It is a cyclic number.

It is not a de Polignac number, because 720099101 - 2¹⁴ = 720082717 is a prime.

It is a super-2 number, since 2×720099101² = 1037085430522016402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720099131) 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, 360049550 + 360049551.

It is an arithmetic number, because the mean of its divisors is an integer number (360049551).

Almost surely, 2^720099101 is an apocalyptic number.

It is an amenable number.

720099101 is a deficient number, since it is larger than the sum of its proper divisors (1).

720099101 is an equidigital number, since it uses as much as digits as its factorization.

720099101 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 720099101 is about 26834.6623045642. The cubic root of 720099101 is about 896.3220688779.

The spelling of 720099101 in words is "seven hundred twenty million, ninety-nine thousand, one hundred one".