121341032505 has 256 divisors, whose sum is σ = 285153361920. Its totient is φ = 47477145600.

The previous prime is 121341032459. The next prime is 121341032521. The reversal of 121341032505 is 505230143121.

121341032505 is a `hidden beast` number, since 1 + 21 + 34 + 103 + 2 + 505 = 666.

It is not a de Polignac number, because 121341032505 - 2⁶ = 121341032441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 11917977 + ... + 11928153.

It is an arithmetic number, because the mean of its divisors is an integer number (1113880320).

Almost surely, 2^121341032505 is an apocalyptic number.

121341032505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121341032505 is an abundant number, since it is smaller than the sum of its proper divisors (163812329415).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121341032505 is a wasteful number, since it uses less digits than its factorization.

121341032505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10277 (or 10271 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 121341032505 its reverse (505230143121), we get a palindrome (626571175626).

The spelling of 121341032505 in words is "one hundred twenty-one billion, three hundred forty-one million, thirty-two thousand, five hundred five".