121230121 has 8 divisors (see below), whose sum is σ = 125942400. Its totient is φ = 116553360.

The previous prime is 121230097. The next prime is 121230139. The reversal of 121230121 is 121032121.

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 121230121 - 2¹³ = 121221929 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121230521) 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, 1815 + ... + 15676.

It is an arithmetic number, because the mean of its divisors is an integer number (15742800).

Almost surely, 2^121230121 is an apocalyptic number.

It is an amenable number.

121230121 is a deficient number, since it is larger than the sum of its proper divisors (4712279).

121230121 is a wasteful number, since it uses less digits than its factorization.

121230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17759.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121230121 is about 11010.4550768803. The cubic root of 121230121 is about 494.9220990901.

Adding to 121230121 its reverse (121032121), we get a palindrome (242262242).

The spelling of 121230121 in words is "one hundred twenty-one million, two hundred thirty thousand, one hundred twenty-one".