121533343315 has 16 divisors (see below), whose sum is σ = 161132701248. Its totient is φ = 87528871936.

The previous prime is 121533343291. The next prime is 121533343319. The reversal of 121533343315 is 513343335121.

It is a cyclic number.

It is not a de Polignac number, because 121533343315 - 2³¹ = 119385859667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121533343319) 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, 31080742 + ... + 31084651.

It is an arithmetic number, because the mean of its divisors is an integer number (10070793828).

Almost surely, 2^121533343315 is an apocalyptic number.

121533343315 is a deficient number, since it is larger than the sum of its proper divisors (39599357933).

121533343315 is a wasteful number, since it uses less digits than its factorization.

121533343315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62165438.

The product of its digits is 48600, while the sum is 34.

Adding to 121533343315 its reverse (513343335121), we get a palindrome (634876678436).

The spelling of 121533343315 in words is "one hundred twenty-one billion, five hundred thirty-three million, three hundred forty-three thousand, three hundred fifteen".