121128084255 has 8 divisors (see below), whose sum is σ = 193804934832. Its totient is φ = 64601644928.

The previous prime is 121128084227. The next prime is 121128084269. The reversal of 121128084255 is 552480821121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121128084255 - 2⁵ = 121128084223 is a prime.

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, 4037602794 + ... + 4037602823.

It is an arithmetic number, because the mean of its divisors is an integer number (24225616854).

Almost surely, 2^121128084255 is an apocalyptic number.

121128084255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121128084255 is a deficient number, since it is larger than the sum of its proper divisors (72676850577).

121128084255 is an equidigital number, since it uses as much as digits as its factorization.

121128084255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8075205625.

The product of its (nonzero) digits is 51200, while the sum is 39.

The spelling of 121128084255 in words is "one hundred twenty-one billion, one hundred twenty-eight million, eighty-four thousand, two hundred fifty-five".