121340353511 has 8 divisors (see below), whose sum is σ = 130749050544. Its totient is φ = 111942345600.

The previous prime is 121340353483. The next prime is 121340353517. The reversal of 121340353511 is 115353043121.

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 121340353511 - 2⁶ = 121340353447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121340353517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2648690 + ... + 2694111.

It is an arithmetic number, because the mean of its divisors is an integer number (16343631318).

Almost surely, 2^121340353511 is an apocalyptic number.

121340353511 is a deficient number, since it is larger than the sum of its proper divisors (9408697033).

121340353511 is a wasteful number, since it uses less digits than its factorization.

121340353511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5344561.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 121340353511 its reverse (115353043121), we get a palindrome (236693396632).

The spelling of 121340353511 in words is "one hundred twenty-one billion, three hundred forty million, three hundred fifty-three thousand, five hundred eleven".