121405325516 has 12 divisors (see below), whose sum is σ = 212663811360. Its totient is φ = 60644236560.

The previous prime is 121405325497. The next prime is 121405325521. The reversal of 121405325516 is 615523504121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14601875 + ... + 14610186.

It is an arithmetic number, because the mean of its divisors is an integer number (17721984280).

Almost surely, 2^121405325516 is an apocalyptic number.

It is an amenable number.

121405325516 is a deficient number, since it is larger than the sum of its proper divisors (91258485844).

121405325516 is a wasteful number, since it uses less digits than its factorization.

121405325516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29213104 (or 29213102 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 121405325516 its reverse (615523504121), we get a palindrome (736928829637).

The spelling of 121405325516 in words is "one hundred twenty-one billion, four hundred five million, three hundred twenty-five thousand, five hundred sixteen".