121298955 has 8 divisors (see below), whose sum is σ = 194078352. Its totient is φ = 64692768.

The previous prime is 121298929. The next prime is 121298971. The reversal of 121298955 is 559892121.

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

It is not a de Polignac number, because 121298955 - 2¹¹ = 121296907 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4043284 + ... + 4043313.

It is an arithmetic number, because the mean of its divisors is an integer number (24259794).

Almost surely, 2^121298955 is an apocalyptic number.

121298955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121298955 is a deficient number, since it is larger than the sum of its proper divisors (72779397).

121298955 is an equidigital number, since it uses as much as digits as its factorization.

121298955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8086605.

The product of its digits is 64800, while the sum is 42.

The square root of 121298955 is about 11013.5804804795. The cubic root of 121298955 is about 495.0157529932.

The spelling of 121298955 in words is "one hundred twenty-one million, two hundred ninety-eight thousand, nine hundred fifty-five".