21220220110099 has 2 divisors, whose sum is σ = 21220220110100. Its totient is φ = 21220220110098.

The previous prime is 21220220110079. The next prime is 21220220110163. The reversal of 21220220110099 is 99001102202212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21220220110099 - 2²¹ = 21220218012947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21220220110099.

It is not a weakly prime, because it can be changed into another prime (21220220110079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610110055049 + 10610110055050.

It is an arithmetic number, because the mean of its divisors is an integer number (10610110055050).

Almost surely, 2^{21220220110099} is an apocalyptic number.

21220220110099 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220220110099 is an equidigital number, since it uses as much as digits as its factorization.

21220220110099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 21220220110099 in words is "twenty-one trillion, two hundred twenty billion, two hundred twenty million, one hundred ten thousand, ninety-nine".