121340322355 has 32 divisors (see below), whose sum is σ = 167287357440. Its totient is φ = 82766551680.

The previous prime is 121340322317. The next prime is 121340322359. The reversal of 121340322355 is 553223043121.

It is not a de Polignac number, because 121340322355 - 2¹¹ = 121340320307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121340322359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10155685 + ... + 10167625.

It is an arithmetic number, because the mean of its divisors is an integer number (5227729920).

Almost surely, 2^121340322355 is an apocalyptic number.

121340322355 is a deficient number, since it is larger than the sum of its proper divisors (45947035085).

121340322355 is a wasteful number, since it uses less digits than its factorization.

121340322355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13459.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 121340322355 its reverse (553223043121), we get a palindrome (674563365476).

The spelling of 121340322355 in words is "one hundred twenty-one billion, three hundred forty million, three hundred twenty-two thousand, three hundred fifty-five".