121321121 has 8 divisors (see below), whose sum is σ = 123322080. Its totient is φ = 119325888.

The previous prime is 121321097. The next prime is 121321127. The reversal of 121321121 is 121123121.

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 121321121 - 2²² = 117126817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121321096 and 121321105.

It is not an unprimeable number, because it can be changed into a prime (121321127) 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, 67385 + ... + 69161.

It is an arithmetic number, because the mean of its divisors is an integer number (15415260).

Almost surely, 2^121321121 is an apocalyptic number.

It is an amenable number.

121321121 is a deficient number, since it is larger than the sum of its proper divisors (2000959).

121321121 is a wasteful number, since it uses less digits than its factorization.

121321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2863.

The product of its digits is 24, while the sum is 14.

The square root of 121321121 is about 11014.5867375948. The cubic root of 121321121 is about 495.0459039836.

Adding to 121321121 its reverse (121123121), we get a palindrome (242444242).

The spelling of 121321121 in words is "one hundred twenty-one million, three hundred twenty-one thousand, one hundred twenty-one".