121323121 has 8 divisors (see below), whose sum is σ = 124136064. Its totient is φ = 118519920.

The previous prime is 121323107. The next prime is 121323143.

121323121 is nontrivially palindromic in base 10.

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 121323121 - 2⁹ = 121322609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121323095 and 121323104.

It is not an unprimeable number, because it can be changed into a prime (121323221) 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 7 ways as a sum of consecutive naturals, for example, 26706 + ... + 30916.

It is an arithmetic number, because the mean of its divisors is an integer number (15517008).

Almost surely, 2^121323121 is an apocalyptic number.

It is an amenable number.

121323121 is a deficient number, since it is larger than the sum of its proper divisors (2812943).

121323121 is an equidigital number, since it uses as much as digits as its factorization.

121323121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4871.

The product of its digits is 72, while the sum is 16.

The square root of 121323121 is about 11014.6775259197. The cubic root of 121323121 is about 495.0486242749.

The spelling of 121323121 in words is "one hundred twenty-one million, three hundred twenty-three thousand, one hundred twenty-one".