121443401 has 4 divisors (see below), whose sum is σ = 121563600. Its totient is φ = 121323204.

The previous prime is 121443389. The next prime is 121443409. The reversal of 121443401 is 104344121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121443401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121443409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58571 + ... + 60608.

It is an arithmetic number, because the mean of its divisors is an integer number (30390900).

Almost surely, 2^121443401 is an apocalyptic number.

It is an amenable number.

121443401 is a deficient number, since it is larger than the sum of its proper divisors (120199).

121443401 is a wasteful number, since it uses less digits than its factorization.

121443401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120198.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 121443401 is about 11020.1361606833. The cubic root of 121443401 is about 495.2121676604.

Adding to 121443401 its reverse (104344121), we get a palindrome (225787522).

The spelling of 121443401 in words is "one hundred twenty-one million, four hundred forty-three thousand, four hundred one".