121340353500 has 288 divisors, whose sum is σ = 387297770496. Its totient is φ = 31978800000.

The previous prime is 121340353483. The next prime is 121340353517. The reversal of 121340353500 is 5353043121.

121340353500 is a `hidden beast` number, since 121 + 3 + 4 + 0 + 3 + 535 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (121340353483) and next prime (121340353517).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 192298185 + ... + 192298815.

Almost surely, 2^121340353500 is an apocalyptic number.

121340353500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121340353500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193648885248).

121340353500 is an abundant number, since it is smaller than the sum of its proper divisors (265957416996).

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

121340353500 is a wasteful number, since it uses less digits than its factorization.

121340353500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 121340353500 its reverse (5353043121), we get a palindrome (126693396621).

The spelling of 121340353500 in words is "one hundred twenty-one billion, three hundred forty million, three hundred fifty-three thousand, five hundred".