121955056 has 20 divisors (see below), whose sum is σ = 236492800. Its totient is φ = 60924672.

The previous prime is 121955051. The next prime is 121955077. The reversal of 121955056 is 650559121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121955051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21265 + ... + 26383.

It is an arithmetic number, because the mean of its divisors is an integer number (11824640).

Almost surely, 2^121955056 is an apocalyptic number.

121955056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121955056 is a deficient number, since it is larger than the sum of its proper divisors (114537744).

121955056 is a wasteful number, since it uses less digits than its factorization.

121955056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6616 (or 6610 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 34.

The square root of 121955056 is about 11043.3263104918. The cubic root of 121955056 is about 495.9066551708.

The spelling of 121955056 in words is "one hundred twenty-one million, nine hundred fifty-five thousand, fifty-six".