21220011001099 has 2 divisors, whose sum is σ = 21220011001100. Its totient is φ = 21220011001098.

The previous prime is 21220011001069. The next prime is 21220011001121. The reversal of 21220011001099 is 99010011002212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21220011001099 - 2¹¹ = 21220010999051 is a prime.

It is not a weakly prime, because it can be changed into another prime (21220011001009) 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, 10610005500549 + 10610005500550.

It is an arithmetic number, because the mean of its divisors is an integer number (10610005500550).

Almost surely, 2^{21220011001099} is an apocalyptic number.

21220011001099 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220011001099 is an equidigital number, since it uses as much as digits as its factorization.

21220011001099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 21220011001099 in words is "twenty-one trillion, two hundred twenty billion, eleven million, one thousand, ninety-nine".