2181008099 has 2 divisors, whose sum is σ = 2181008100. Its totient is φ = 2181008098.

The previous prime is 2181008083. The next prime is 2181008111. The reversal of 2181008099 is 9908001812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2181008099 - 2⁴ = 2181008083 is a prime.

It is not a weakly prime, because it can be changed into another prime (2181008009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090504049 + 1090504050.

It is an arithmetic number, because the mean of its divisors is an integer number (1090504050).

Almost surely, 2^2181008099 is an apocalyptic number.

2181008099 is a deficient number, since it is larger than the sum of its proper divisors (1).

2181008099 is an equidigital number, since it uses as much as digits as its factorization.

2181008099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 2181008099 is about 46701.2644261373. The cubic root of 2181008099 is about 1296.8380946339.

The spelling of 2181008099 in words is "two billion, one hundred eighty-one million, eight thousand, ninety-nine".