921101099 has 2 divisors, whose sum is σ = 921101100. Its totient is φ = 921101098.

The previous prime is 921101063. The next prime is 921101117. The reversal of 921101099 is 990101129.

It is a strong prime.

It is an emirp because it is prime and its reverse (990101129) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 921101099 - 2¹² = 921097003 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (921101009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460550549 + 460550550.

It is an arithmetic number, because the mean of its divisors is an integer number (460550550).

Almost surely, 2^921101099 is an apocalyptic number.

921101099 is a deficient number, since it is larger than the sum of its proper divisors (1).

921101099 is an equidigital number, since it uses as much as digits as its factorization.

921101099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 921101099 is about 30349.6474279356. The cubic root of 921101099 is about 972.9766847793.

The spelling of 921101099 in words is "nine hundred twenty-one million, one hundred one thousand, ninety-nine".