121604356321 has 8 divisors (see below), whose sum is σ = 145018859904. Its totient is φ = 99700465920.

The previous prime is 121604356273. The next prime is 121604356333. The reversal of 121604356321 is 123653406121.

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 121604356321 - 2¹¹ = 121604354273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121604356381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377653120 + ... + 377653441.

It is an arithmetic number, because the mean of its divisors is an integer number (18127357488).

Almost surely, 2^121604356321 is an apocalyptic number.

It is an amenable number.

121604356321 is a deficient number, since it is larger than the sum of its proper divisors (23414503583).

121604356321 is an equidigital number, since it uses as much as digits as its factorization.

121604356321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755306591.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 121604356321 in words is "one hundred twenty-one billion, six hundred four million, three hundred fifty-six thousand, three hundred twenty-one".