121860255 has 16 divisors (see below), whose sum is σ = 212701824. Its totient is φ = 59083680.

The previous prime is 121860251. The next prime is 121860257. The reversal of 121860255 is 552068121.

It is not a de Polignac number, because 121860255 - 2² = 121860251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121860251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369109 + ... + 369438.

It is an arithmetic number, because the mean of its divisors is an integer number (13293864).

Almost surely, 2^121860255 is an apocalyptic number.

121860255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121860255 is a deficient number, since it is larger than the sum of its proper divisors (90841569).

121860255 is a wasteful number, since it uses less digits than its factorization.

121860255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738566.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 121860255 is about 11039.0332457150. The cubic root of 121860255 is about 495.7781252155.

The spelling of 121860255 in words is "one hundred twenty-one million, eight hundred sixty thousand, two hundred fifty-five".