121443353 has 4 divisors (see below), whose sum is σ = 124405428. Its totient is φ = 118481280.

The previous prime is 121443341. The next prime is 121443389. The reversal of 121443353 is 353344121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3655744 + 117787609 = 1912^2 + 10853^2 .

It is a cyclic number.

It is not a de Polignac number, because 121443353 - 2¹² = 121439257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121443853) 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, 1480976 + ... + 1481057.

It is an arithmetic number, because the mean of its divisors is an integer number (31101357).

Almost surely, 2^121443353 is an apocalyptic number.

It is an amenable number.

121443353 is a deficient number, since it is larger than the sum of its proper divisors (2962075).

121443353 is an equidigital number, since it uses as much as digits as its factorization.

121443353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2962074.

The product of its digits is 4320, while the sum is 26.

The square root of 121443353 is about 11020.1339828516. The cubic root of 121443353 is about 495.2121024169.

Adding to 121443353 its reverse (353344121), we get a palindrome (474787474).

The spelling of 121443353 in words is "one hundred twenty-one million, four hundred forty-three thousand, three hundred fifty-three".