121355326345 has 32 divisors (see below), whose sum is σ = 163987566336. Its totient is φ = 85436870400.

The previous prime is 121355326307. The next prime is 121355326361. The reversal of 121355326345 is 543623553121.

It is not a de Polignac number, because 121355326345 - 2¹¹ = 121355324297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121355326298 and 121355326307.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 249540 + ... + 552250.

It is an arithmetic number, because the mean of its divisors is an integer number (5124611448).

Almost surely, 2^121355326345 is an apocalyptic number.

It is an amenable number.

121355326345 is a deficient number, since it is larger than the sum of its proper divisors (42632239991).

121355326345 is a wasteful number, since it uses less digits than its factorization.

121355326345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302961.

The product of its digits is 324000, while the sum is 40.

Adding to 121355326345 its reverse (543623553121), we get a palindrome (664978879466).

The spelling of 121355326345 in words is "one hundred twenty-one billion, three hundred fifty-five million, three hundred twenty-six thousand, three hundred forty-five".