121845121 has 8 divisors (see below), whose sum is σ = 124545600. Its totient is φ = 119167440.

The previous prime is 121845109. The next prime is 121845127. The reversal of 121845121 is 121548121.

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 121845121 - 2⁹ = 121844609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121845127) 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, 5340 + ... + 16498.

It is an arithmetic number, because the mean of its divisors is an integer number (15568200).

Almost surely, 2^121845121 is an apocalyptic number.

It is an amenable number.

121845121 is a deficient number, since it is larger than the sum of its proper divisors (2700479).

121845121 is a wasteful number, since it uses less digits than its factorization.

121845121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11399.

The product of its digits is 640, while the sum is 25.

The square root of 121845121 is about 11038.3477477383. The cubic root of 121845121 is about 495.7576005668.

The spelling of 121845121 in words is "one hundred twenty-one million, eight hundred forty-five thousand, one hundred twenty-one".