121735544872 has 16 divisors (see below), whose sum is σ = 233110618560. Its totient is φ = 59572713264.

The previous prime is 121735544863. The next prime is 121735544941. The reversal of 121735544872 is 278445537121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161881998 + ... + 161882749.

It is an arithmetic number, because the mean of its divisors is an integer number (14569413660).

Almost surely, 2^121735544872 is an apocalyptic number.

It is an amenable number.

121735544872 is a deficient number, since it is larger than the sum of its proper divisors (111375073688).

121735544872 is a wasteful number, since it uses less digits than its factorization.

121735544872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323764800 (or 323764796 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 49.

The spelling of 121735544872 in words is "one hundred twenty-one billion, seven hundred thirty-five million, five hundred forty-four thousand, eight hundred seventy-two".