121303112543 has 8 divisors (see below), whose sum is σ = 122635292112. Its totient is φ = 119974609216.

The previous prime is 121303112509. The next prime is 121303112551. The reversal of 121303112543 is 345211303121.

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

It is a cyclic number.

It is not a de Polignac number, because 121303112543 - 2¹⁶ = 121303047007 is a prime.

It is a super-2 number, since 2×121303112543² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121303112563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 852680 + ... + 984717.

It is an arithmetic number, because the mean of its divisors is an integer number (15329411514).

Almost surely, 2^121303112543 is an apocalyptic number.

121303112543 is a deficient number, since it is larger than the sum of its proper divisors (1332179569).

121303112543 is a wasteful number, since it uses less digits than its factorization.

121303112543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838121.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 121303112543 its reverse (345211303121), we get a palindrome (466514415664).

The spelling of 121303112543 in words is "one hundred twenty-one billion, three hundred three million, one hundred twelve thousand, five hundred forty-three".