121100554505552 has 40 divisors (see below), whose sum is σ = 234783969367200. Its totient is φ = 60511145438592.

The previous prime is 121100554505521. The next prime is 121100554505561. The reversal of 121100554505552 is 255505455001121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194011099 + ... + 1194112517.

It is an arithmetic number, because the mean of its divisors is an integer number (5869599234180).

Almost surely, 2^{121100554505552} is an apocalyptic number.

It is an amenable number.

121100554505552 is a deficient number, since it is larger than the sum of its proper divisors (113683414861648).

121100554505552 is a wasteful number, since it uses less digits than its factorization.

121100554505552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148923 (or 148917 counting only the distinct ones).

The product of its (nonzero) digits is 250000, while the sum is 41.

The spelling of 121100554505552 in words is "one hundred twenty-one trillion, one hundred billion, five hundred fifty-four million, five hundred five thousand, five hundred fifty-two".