121340305020 has 48 divisors (see below), whose sum is σ = 370639479168. Its totient is φ = 29415831360.

The previous prime is 121340304989. The next prime is 121340305033. The reversal of 121340305020 is 20503043121.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 91923814 + ... + 91925133.

It is an arithmetic number, because the mean of its divisors is an integer number (7721655816).

Almost surely, 2^121340305020 is an apocalyptic number.

121340305020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121340305020 is an abundant number, since it is smaller than the sum of its proper divisors (249299174148).

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

121340305020 is a wasteful number, since it uses less digits than its factorization.

121340305020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183848970 (or 183848968 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 121340305020 its reverse (20503043121), we get a palindrome (141843348141).

The spelling of 121340305020 in words is "one hundred twenty-one billion, three hundred forty million, three hundred five thousand, twenty".