121531456043 has 32 divisors (see below), whose sum is σ = 133075483200. Its totient is φ = 110560665600.

The previous prime is 121531456031. The next prime is 121531456061. The reversal of 121531456043 is 340654135121.

It is a cyclic number.

It is not a de Polignac number, because 121531456043 - 2³⁰ = 120457714219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121531455994 and 121531456012.

It is not an unprimeable number, because it can be changed into a prime (121531456093) 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, 12994733 + ... + 13004081.

It is an arithmetic number, because the mean of its divisors is an integer number (4158608850).

Almost surely, 2^121531456043 is an apocalyptic number.

121531456043 is a deficient number, since it is larger than the sum of its proper divisors (11544027157).

121531456043 is a wasteful number, since it uses less digits than its factorization.

121531456043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9647.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 121531456043 in words is "one hundred twenty-one billion, five hundred thirty-one million, four hundred fifty-six thousand, forty-three".