121434255415 has 48 divisors (see below), whose sum is σ = 169948725984. Its totient is φ = 82589644800.

The previous prime is 121434255407. The next prime is 121434255431. The reversal of 121434255415 is 514552434121.

It is not a de Polignac number, because 121434255415 - 2³ = 121434255407 is a prime.

It is a Duffinian number.

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 47 ways as a sum of consecutive naturals, for example, 2471185 + ... + 2519845.

It is an arithmetic number, because the mean of its divisors is an integer number (3540598458).

Almost surely, 2^121434255415 is an apocalyptic number.

121434255415 is a deficient number, since it is larger than the sum of its proper divisors (48514470569).

121434255415 is a wasteful number, since it uses less digits than its factorization.

121434255415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48868 (or 48851 counting only the distinct ones).

The product of its digits is 96000, while the sum is 37.

Adding to 121434255415 its reverse (514552434121), we get a palindrome (635986689536).

The spelling of 121434255415 in words is "one hundred twenty-one billion, four hundred thirty-four million, two hundred fifty-five thousand, four hundred fifteen".