121044409 has 2 divisors, whose sum is σ = 121044410. Its totient is φ = 121044408.

The previous prime is 121044401. The next prime is 121044431. The reversal of 121044409 is 904440121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85008400 + 36036009 = 9220^2 + 6003^2 .

It is a cyclic number.

It is not a de Polignac number, because 121044409 - 2³ = 121044401 is a prime.

It is not a weakly prime, because it can be changed into another prime (121044401) 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 as a sum of consecutive naturals, namely, 60522204 + 60522205.

It is an arithmetic number, because the mean of its divisors is an integer number (60522205).

Almost surely, 2^121044409 is an apocalyptic number.

It is an amenable number.

121044409 is a deficient number, since it is larger than the sum of its proper divisors (1).

121044409 is an equidigital number, since it uses as much as digits as its factorization.

121044409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 121044409 is about 11002.0184057290. The cubic root of 121044409 is about 494.6692467852.

The spelling of 121044409 in words is "one hundred twenty-one million, forty-four thousand, four hundred nine".