122220121099 has 2 divisors, whose sum is σ = 122220121100. Its totient is φ = 122220121098.

The previous prime is 122220121087. The next prime is 122220121117. The reversal of 122220121099 is 990121022221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122220121099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122220121099.

It is not a weakly prime, because it can be changed into another prime (125220121099) 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, 61110060549 + 61110060550.

It is an arithmetic number, because the mean of its divisors is an integer number (61110060550).

Almost surely, 2^122220121099 is an apocalyptic number.

122220121099 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220121099 is an equidigital number, since it uses as much as digits as its factorization.

122220121099 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 122220121099 in words is "one hundred twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, ninety-nine".