121340420530 has 32 divisors (see below), whose sum is σ = 249708697344. Its totient is φ = 41586743616.

The previous prime is 121340420527. The next prime is 121340420533. The reversal of 121340420530 is 35024043121.

It is an interprime number because it is at equal distance from previous prime (121340420527) and next prime (121340420533).

It is a junction number, because it is equal to n+sod(n) for n = 121340420495 and 121340420504.

It is not an unprimeable number, because it can be changed into a prime (121340420533) by changing a digit.

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, 139057 + ... + 511876.

It is an arithmetic number, because the mean of its divisors is an integer number (7803396792).

Almost surely, 2^121340420530 is an apocalyptic number.

121340420530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121340420530 is an abundant number, since it is smaller than the sum of its proper divisors (128368276814).

121340420530 is a wasteful number, since it uses less digits than its factorization.

121340420530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653610.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 121340420530 its reverse (35024043121), we get a palindrome (156364463651).

The spelling of 121340420530 in words is "one hundred twenty-one billion, three hundred forty million, four hundred twenty thousand, five hundred thirty".