21122001011099 has 2 divisors, whose sum is σ = 21122001011100. Its totient is φ = 21122001011098.

The previous prime is 21122001011093. The next prime is 21122001011197. The reversal of 21122001011099 is 99011010022112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21122001011099 is a prime.

It is a super-2 number, since 2×21122001011099² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21122001011093) 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, 10561000505549 + 10561000505550.

It is an arithmetic number, because the mean of its divisors is an integer number (10561000505550).

Almost surely, 2^{21122001011099} is an apocalyptic number.

21122001011099 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122001011099 is an equidigital number, since it uses as much as digits as its factorization.

21122001011099 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 29.

The spelling of 21122001011099 in words is "twenty-one trillion, one hundred twenty-two billion, one million, eleven thousand, ninety-nine".