121401323 has 4 divisors (see below), whose sum is σ = 123691968. Its totient is φ = 119110680.

The previous prime is 121401307. The next prime is 121401331. The reversal of 121401323 is 323104121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323104121 = 241 ⋅1340681.

It is a cyclic number.

It is not a de Polignac number, because 121401323 - 2⁴ = 121401307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121401353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1145243 + ... + 1145348.

It is an arithmetic number, because the mean of its divisors is an integer number (30922992).

Almost surely, 2^121401323 is an apocalyptic number.

121401323 is a deficient number, since it is larger than the sum of its proper divisors (2290645).

121401323 is an equidigital number, since it uses as much as digits as its factorization.

121401323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290644.

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

The square root of 121401323 is about 11018.2268537183. The cubic root of 121401323 is about 495.1549669549.

Adding to 121401323 its reverse (323104121), we get a palindrome (444505444).

The spelling of 121401323 in words is "one hundred twenty-one million, four hundred one thousand, three hundred twenty-three".