121002221099 has 2 divisors, whose sum is σ = 121002221100. Its totient is φ = 121002221098.

The previous prime is 121002221089. The next prime is 121002221117. The reversal of 121002221099 is 990122200121.

It is a weak prime.

It is an emirp because it is prime and its reverse (990122200121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121002221099 - 2¹⁶ = 121002155563 is a prime.

It is not a weakly prime, because it can be changed into another prime (121002221089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60501110549 + 60501110550.

It is an arithmetic number, because the mean of its divisors is an integer number (60501110550).

Almost surely, 2^121002221099 is an apocalyptic number.

121002221099 is a deficient number, since it is larger than the sum of its proper divisors (1).

121002221099 is an equidigital number, since it uses as much as digits as its factorization.

121002221099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 121002221099 in words is "one hundred twenty-one billion, two million, two hundred twenty-one thousand, ninety-nine".