121220322123 has 8 divisors (see below), whose sum is σ = 163109914000. Its totient is φ = 80072139168.

The previous prime is 121220322121. The next prime is 121220322127. The reversal of 121220322123 is 321223022121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121220322123 - 2¹ = 121220322121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121220322123.

It is not an unprimeable number, because it can be changed into a prime (121220322121) 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 in 7 ways as a sum of consecutive naturals, for example, 185351848 + ... + 185352501.

It is an arithmetic number, because the mean of its divisors is an integer number (20388739250).

Almost surely, 2^121220322123 is an apocalyptic number.

121220322123 is a deficient number, since it is larger than the sum of its proper divisors (41889591877).

121220322123 is a wasteful number, since it uses less digits than its factorization.

121220322123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370704461.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 121220322123 its reverse (321223022121), we get a palindrome (442443344244).

The spelling of 121220322123 in words is "one hundred twenty-one billion, two hundred twenty million, three hundred twenty-two thousand, one hundred twenty-three".