121221323 has 4 divisors (see below), whose sum is σ = 121273080. Its totient is φ = 121169568.

The previous prime is 121221283. The next prime is 121221337. The reversal of 121221323 is 323122121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121221323 - 2¹² = 121217227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121221623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22190 + ... + 27107.

It is an arithmetic number, because the mean of its divisors is an integer number (30318270).

Almost surely, 2^121221323 is an apocalyptic number.

121221323 is a deficient number, since it is larger than the sum of its proper divisors (51757).

121221323 is an equidigital number, since it uses as much as digits as its factorization.

121221323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51756.

The product of its digits is 144, while the sum is 17.

The square root of 121221323 is about 11010.0555402777. The cubic root of 121221323 is about 494.9101261857.

Adding to 121221323 its reverse (323122121), we get a palindrome (444343444).

The spelling of 121221323 in words is "one hundred twenty-one million, two hundred twenty-one thousand, three hundred twenty-three".