110121209999 has 2 divisors, whose sum is σ = 110121210000. Its totient is φ = 110121209998.

The previous prime is 110121209969. The next prime is 110121210037. The reversal of 110121209999 is 999902121011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 110121209999 - 2²⁴ = 110104432783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110121209969) 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, 55060604999 + 55060605000.

It is an arithmetic number, because the mean of its divisors is an integer number (55060605000).

Almost surely, 2^110121209999 is an apocalyptic number.

110121209999 is a deficient number, since it is larger than the sum of its proper divisors (1).

110121209999 is an equidigital number, since it uses as much as digits as its factorization.

110121209999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 44.

The spelling of 110121209999 in words is "one hundred ten billion, one hundred twenty-one million, two hundred nine thousand, nine hundred ninety-nine".