121542345200 has 60 divisors (see below), whose sum is σ = 292085540448. Its totient is φ = 48603609600.

The previous prime is 121542345167. The next prime is 121542345229. The reversal of 121542345200 is 2543245121.

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 11 ways as a sum of consecutive naturals, for example, 1489460 + ... + 1568940.

Almost surely, 2^121542345200 is an apocalyptic number.

121542345200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121542345200 is an abundant number, since it is smaller than the sum of its proper divisors (170543195248).

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

121542345200 is a wasteful number, since it uses less digits than its factorization.

121542345200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83322 (or 83311 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 121542345200 in words is "one hundred twenty-one billion, five hundred forty-two million, three hundred forty-five thousand, two hundred".