121216485 has 32 divisors (see below), whose sum is σ = 219864960. Its totient is φ = 56533248.

The previous prime is 121216483. The next prime is 121216507. The reversal of 121216485 is 584612121.

It is not a de Polignac number, because 121216485 - 2¹ = 121216483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121216481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12654 + ... + 20063.

It is an arithmetic number, because the mean of its divisors is an integer number (6870780).

Almost surely, 2^121216485 is an apocalyptic number.

121216485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121216485 is a deficient number, since it is larger than the sum of its proper divisors (98648475).

121216485 is a wasteful number, since it uses less digits than its factorization.

121216485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32757.

The product of its digits is 3840, while the sum is 30.

The square root of 121216485 is about 11009.8358298387. The cubic root of 121216485 is about 494.9035420661.

The spelling of 121216485 in words is "one hundred twenty-one million, two hundred sixteen thousand, four hundred eighty-five".