121075655 has 16 divisors (see below), whose sum is σ = 150034944. Its totient is φ = 93726720.

The previous prime is 121075639. The next prime is 121075681. The reversal of 121075655 is 556570121.

It is not a de Polignac number, because 121075655 - 2⁴ = 121075639 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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34010 + ... + 37400.

It is an arithmetic number, because the mean of its divisors is an integer number (9377184).

Almost surely, 2^121075655 is an apocalyptic number.

121075655 is a deficient number, since it is larger than the sum of its proper divisors (28959289).

121075655 is a wasteful number, since it uses less digits than its factorization.

121075655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3626.

The product of its (nonzero) digits is 10500, while the sum is 32.

The square root of 121075655 is about 11003.4383262687. The cubic root of 121075655 is about 494.7118072131.

The spelling of 121075655 in words is "one hundred twenty-one million, seventy-five thousand, six hundred fifty-five".