1818201100099 has 2 divisors, whose sum is σ = 1818201100100. Its totient is φ = 1818201100098.

The previous prime is 1818201100069. The next prime is 1818201100109. The reversal of 1818201100099 is 9900011028181.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1818201100099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1818201100019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909100550049 + 909100550050.

It is an arithmetic number, because the mean of its divisors is an integer number (909100550050).

Almost surely, 2^{1818201100099} is an apocalyptic number.

1818201100099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818201100099 is an equidigital number, since it uses as much as digits as its factorization.

1818201100099 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 40.

The spelling of 1818201100099 in words is "one trillion, eight hundred eighteen billion, two hundred one million, one hundred thousand, ninety-nine".