121665624100303 has 12 divisors (see below), whose sum is σ = 125809889809800. Its totient is φ = 117651122276832.

The previous prime is 121665624100261. The next prime is 121665624100331. The reversal of 121665624100303 is 303001426566121.

It is not a de Polignac number, because 121665624100303 - 2¹⁷ = 121665623969231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121665624106303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272390028 + ... + 272836321.

It is an arithmetic number, because the mean of its divisors is an integer number (10484157484150).

Almost surely, 2^{121665624100303} is an apocalyptic number.

121665624100303 is a deficient number, since it is larger than the sum of its proper divisors (4144265709497).

121665624100303 is an equidigital number, since it uses as much as digits as its factorization.

121665624100303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545226586 (or 545226549 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 121665624100303 in words is "one hundred twenty-one trillion, six hundred sixty-five billion, six hundred twenty-four million, one hundred thousand, three hundred three".