211121000099 has 2 divisors, whose sum is σ = 211121000100. Its totient is φ = 211121000098.

The previous prime is 211121000087. The next prime is 211121000147. The reversal of 211121000099 is 990000121112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211121000099 - 2²⁴ = 211104222883 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (211121000029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560500049 + 105560500050.

It is an arithmetic number, because the mean of its divisors is an integer number (105560500050).

Almost surely, 2^211121000099 is an apocalyptic number.

211121000099 is a deficient number, since it is larger than the sum of its proper divisors (1).

211121000099 is an equidigital number, since it uses as much as digits as its factorization.

211121000099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 26.

The spelling of 211121000099 in words is "two hundred eleven billion, one hundred twenty-one million, ninety-nine", and thus it is an aban number.