121204441 has 4 divisors (see below), whose sum is σ = 128334132. Its totient is φ = 114074752.

The previous prime is 121204423. The next prime is 121204453. The reversal of 121204441 is 144402121.

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 111619225 + 9585216 = 10565^2 + 3096^2 .

It is a cyclic number.

It is not a de Polignac number, because 121204441 - 2²⁵ = 87650009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121004441) 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 3 ways as a sum of consecutive naturals, for example, 3564820 + ... + 3564853.

It is an arithmetic number, because the mean of its divisors is an integer number (32083533).

Almost surely, 2^121204441 is an apocalyptic number.

It is an amenable number.

121204441 is a deficient number, since it is larger than the sum of its proper divisors (7129691).

121204441 is an equidigital number, since it uses as much as digits as its factorization.

121204441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7129690.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 121204441 is about 11009.2888507841. The cubic root of 121204441 is about 494.8871504131.

Adding to 121204441 its reverse (144402121), we get a palindrome (265606562).

It can be divided in two parts, 12120 and 4441, that added together give a palindrome (16561).

The spelling of 121204441 in words is "one hundred twenty-one million, two hundred four thousand, four hundred forty-one".