22021001099 has 2 divisors, whose sum is σ = 22021001100. Its totient is φ = 22021001098.

The previous prime is 22021001087. The next prime is 22021001173. The reversal of 22021001099 is 99010012022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22021001099 - 2¹² = 22020997003 is a prime.

It is not a weakly prime, because it can be changed into another prime (22021001069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010500549 + 11010500550.

It is an arithmetic number, because the mean of its divisors is an integer number (11010500550).

Almost surely, 2^22021001099 is an apocalyptic number.

22021001099 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021001099 is an equidigital number, since it uses as much as digits as its factorization.

22021001099 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 26.

The spelling of 22021001099 in words is "twenty-two billion, twenty-one million, one thousand, ninety-nine".