121308121 has 8 divisors (see below), whose sum is σ = 133077600. Its totient is φ = 109662240.

The previous prime is 121308101. The next prime is 121308133. The reversal of 121308121 is 121803121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121308121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121308101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28836 + ... + 32773.

It is an arithmetic number, because the mean of its divisors is an integer number (16634700).

Almost surely, 2^121308121 is an apocalyptic number.

121308121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121308121 is a deficient number, since it is larger than the sum of its proper divisors (11769479).

121308121 is a wasteful number, since it uses less digits than its factorization.

121308121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61799.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 121308121 is about 11013.9965952419. The cubic root of 121308121 is about 495.0282213614.

The spelling of 121308121 in words is "one hundred twenty-one million, three hundred eight thousand, one hundred twenty-one".