121304103143 has 32 divisors (see below), whose sum is σ = 135053775360. Its totient is φ = 108368916480.

The previous prime is 121304103133. The next prime is 121304103169. The reversal of 121304103143 is 341301403121.

It is a cyclic number.

It is not a de Polignac number, because 121304103143 - 2¹⁰ = 121304102119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121304103133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29376503 + ... + 29380631.

It is an arithmetic number, because the mean of its divisors is an integer number (4220430480).

Almost surely, 2^121304103143 is an apocalyptic number.

121304103143 is a deficient number, since it is larger than the sum of its proper divisors (13749672217).

121304103143 is a wasteful number, since it uses less digits than its factorization.

121304103143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4727.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 121304103143 its reverse (341301403121), we get a palindrome (462605506264).

The spelling of 121304103143 in words is "one hundred twenty-one billion, three hundred four million, one hundred three thousand, one hundred forty-three".