121131334455 has 64 divisors (see below), whose sum is σ = 208452331008. Its totient is φ = 59844280320.

The previous prime is 121131334453. The next prime is 121131334469. The reversal of 121131334455 is 554433131121.

It is not a de Polignac number, because 121131334455 - 2¹ = 121131334453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121131334453) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26838279 + ... + 26842791.

It is an arithmetic number, because the mean of its divisors is an integer number (3257067672).

Almost surely, 2^121131334455 is an apocalyptic number.

121131334455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121131334455 is a deficient number, since it is larger than the sum of its proper divisors (87320996553).

121131334455 is a wasteful number, since it uses less digits than its factorization.

121131334455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6176.

The product of its digits is 21600, while the sum is 33.

Adding to 121131334455 its reverse (554433131121), we get a palindrome (675564465576).

The spelling of 121131334455 in words is "one hundred twenty-one billion, one hundred thirty-one million, three hundred thirty-four thousand, four hundred fifty-five".