121301342305 has 64 divisors (see below), whose sum is σ = 173088534528. Its totient is φ = 80446959360.

The previous prime is 121301342297. The next prime is 121301342321. The reversal of 121301342305 is 503243103121.

It is a happy number.

It is not a de Polignac number, because 121301342305 - 2³ = 121301342297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121301342305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34390452 + ... + 34393978.

It is an arithmetic number, because the mean of its divisors is an integer number (2704508352).

Almost surely, 2^121301342305 is an apocalyptic number.

It is an amenable number.

121301342305 is a deficient number, since it is larger than the sum of its proper divisors (51787192223).

121301342305 is a wasteful number, since it uses less digits than its factorization.

121301342305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4126.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 121301342305 its reverse (503243103121), we get a palindrome (624544445426).

The spelling of 121301342305 in words is "one hundred twenty-one billion, three hundred one million, three hundred forty-two thousand, three hundred five".