121343907125 has 16 divisors (see below), whose sum is σ = 173071082496. Its totient is φ = 83207250000.

The previous prime is 121343907121. The next prime is 121343907163. The reversal of 121343907125 is 521709343121.

It is not a de Polignac number, because 121343907125 - 2² = 121343907121 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121343907121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69338501 + ... + 69340250.

It is an arithmetic number, because the mean of its divisors is an integer number (10816942656).

Almost surely, 2^121343907125 is an apocalyptic number.

It is an amenable number.

121343907125 is a deficient number, since it is larger than the sum of its proper divisors (51727175371).

121343907125 is an equidigital number, since it uses as much as digits as its factorization.

121343907125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138678773 (or 138678763 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 121343907125 in words is "one hundred twenty-one billion, three hundred forty-three million, nine hundred seven thousand, one hundred twenty-five".