2106720099 has 12 divisors (see below), whose sum is σ = 3319680312. Its totient is φ = 1276800000.

The previous prime is 2106720071. The next prime is 2106720127. The reversal of 2106720099 is 9900276012.

It is an interprime number because it is at equal distance from previous prime (2106720071) and next prime (2106720127).

It is not a de Polignac number, because 2106720099 - 2¹³ = 2106711907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2106720299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10639902 + ... + 10640099.

It is an arithmetic number, because the mean of its divisors is an integer number (276640026).

Almost surely, 2^2106720099 is an apocalyptic number.

2106720099 is a deficient number, since it is larger than the sum of its proper divisors (1212960213).

2106720099 is a wasteful number, since it uses less digits than its factorization.

2106720099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21280018 (or 21280015 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 2106720099 is about 45899.0206758271. The cubic root of 2106720099 is about 1281.9436817476.

The spelling of 2106720099 in words is "two billion, one hundred six million, seven hundred twenty thousand, ninety-nine".