121355545204 has 24 divisors (see below), whose sum is σ = 217404800928. Its totient is φ = 59250740640.

The previous prime is 121355545189. The next prime is 121355545229. The reversal of 121355545204 is 402545553121.

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 7 ways as a sum of consecutive naturals, for example, 1311742 + ... + 1401205.

It is an arithmetic number, because the mean of its divisors is an integer number (9058533372).

Almost surely, 2^121355545204 is an apocalyptic number.

It is an amenable number.

121355545204 is a deficient number, since it is larger than the sum of its proper divisors (96049255724).

121355545204 is a wasteful number, since it uses less digits than its factorization.

121355545204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713215 (or 2713213 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 121355545204 in words is "one hundred twenty-one billion, three hundred fifty-five million, five hundred forty-five thousand, two hundred four".