121340331530 has 32 divisors (see below), whose sum is σ = 240495117120. Its totient is φ = 43711381120.

The previous prime is 121340331529. The next prime is 121340331631. The reversal of 121340331530 is 35133043121.

It is a self number, because there is not a number n which added to its sum of digits gives 121340331530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5142875 + ... + 5166414.

It is an arithmetic number, because the mean of its divisors is an integer number (7515472410).

Almost surely, 2^121340331530 is an apocalyptic number.

121340331530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121340331530 is a deficient number, since it is larger than the sum of its proper divisors (119154785590).

121340331530 is a wasteful number, since it uses less digits than its factorization.

121340331530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10309414.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 121340331530 its reverse (35133043121), we get a palindrome (156473374651).

The spelling of 121340331530 in words is "one hundred twenty-one billion, three hundred forty million, three hundred thirty-one thousand, five hundred thirty".