211020221099 has 2 divisors, whose sum is σ = 211020221100. Its totient is φ = 211020221098.

The previous prime is 211020221023. The next prime is 211020221123. The reversal of 211020221099 is 990122020112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211020221099 - 2³⁶ = 142300744363 is a prime.

It is not a weakly prime, because it can be changed into another prime (211020121099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510110549 + 105510110550.

It is an arithmetic number, because the mean of its divisors is an integer number (105510110550).

Almost surely, 2^211020221099 is an apocalyptic number.

211020221099 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020221099 is an equidigital number, since it uses as much as digits as its factorization.

211020221099 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 29.

The spelling of 211020221099 in words is "two hundred eleven billion, twenty million, two hundred twenty-one thousand, ninety-nine".