121355300345 has 8 divisors (see below), whose sum is σ = 145792416264. Its totient is φ = 96973536384.

The previous prime is 121355300329. The next prime is 121355300351. The reversal of 121355300345 is 543003553121.

It can be written as a sum of positive squares in 4 ways, for example, as 65284849081 + 56070451264 = 255509^2 + 236792^2 .

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 121355300345 - 2⁴ = 121355300329 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13833164 + ... + 13841933.

It is an arithmetic number, because the mean of its divisors is an integer number (18224052033).

Almost surely, 2^121355300345 is an apocalyptic number.

It is an amenable number.

121355300345 is a deficient number, since it is larger than the sum of its proper divisors (24437115919).

121355300345 is an equidigital number, since it uses as much as digits as its factorization.

121355300345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27675979.

The product of its (nonzero) digits is 27000, while the sum is 32.

Adding to 121355300345 its reverse (543003553121), we get a palindrome (664358853466).

The spelling of 121355300345 in words is "one hundred twenty-one billion, three hundred fifty-five million, three hundred thousand, three hundred forty-five".