11211221200099 has 2 divisors, whose sum is σ = 11211221200100. Its totient is φ = 11211221200098.

The previous prime is 11211221200073. The next prime is 11211221200159. The reversal of 11211221200099 is 99000212211211.

11211221200099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11211221200099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11211221200099.

It is not a weakly prime, because it can be changed into another prime (11211221200499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605610600049 + 5605610600050.

It is an arithmetic number, because the mean of its divisors is an integer number (5605610600050).

Almost surely, 2^{11211221200099} is an apocalyptic number.

11211221200099 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211221200099 is an equidigital number, since it uses as much as digits as its factorization.

11211221200099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 11211221200099 in words is "eleven trillion, two hundred eleven billion, two hundred twenty-one million, two hundred thousand, ninety-nine".