121340353425 has 12 divisors (see below), whose sum is σ = 200616051120. Its totient is φ = 64714855120.

The previous prime is 121340353403. The next prime is 121340353441. The reversal of 121340353425 is 524353043121.

It is not a de Polignac number, because 121340353425 - 2¹² = 121340349329 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 808935615 + ... + 808935764.

It is an arithmetic number, because the mean of its divisors is an integer number (16718004260).

Almost surely, 2^121340353425 is an apocalyptic number.

121340353425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121340353425 is a deficient number, since it is larger than the sum of its proper divisors (79275697695).

121340353425 is a wasteful number, since it uses less digits than its factorization.

121340353425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617871392 (or 1617871387 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 121340353425 its reverse (524353043121), we get a palindrome (645693396546).

The spelling of 121340353425 in words is "one hundred twenty-one billion, three hundred forty million, three hundred fifty-three thousand, four hundred twenty-five".