121334435355 has 16 divisors (see below), whose sum is σ = 221868681984. Its totient is φ = 55467170400.

The previous prime is 121334435353. The next prime is 121334435371. The reversal of 121334435355 is 553534433121.

It is not a de Polignac number, because 121334435355 - 2¹ = 121334435353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121334435353) 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, 577782921 + ... + 577783130.

It is an arithmetic number, because the mean of its divisors is an integer number (13866792624).

Almost surely, 2^121334435355 is an apocalyptic number.

121334435355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121334435355 is a deficient number, since it is larger than the sum of its proper divisors (100534246629).

121334435355 is a wasteful number, since it uses less digits than its factorization.

121334435355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155566066.

The product of its digits is 324000, while the sum is 39.

Adding to 121334435355 its reverse (553534433121), we get a palindrome (674868868476).

The spelling of 121334435355 in words is "one hundred twenty-one billion, three hundred thirty-four million, four hundred thirty-five thousand, three hundred fifty-five".