121301009 has 4 divisors (see below), whose sum is σ = 121454004. Its totient is φ = 121148016.

The previous prime is 121301003. The next prime is 121301023. The reversal of 121301009 is 900103121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 900103121 = 1831 ⋅491591.

It can be written as a sum of positive squares in 2 ways, for example, as 72301009 + 49000000 = 8503^2 + 7000^2 .

It is a cyclic number.

It is not a de Polignac number, because 121301009 - 2¹⁶ = 121235473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121301003) 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, 75302 + ... + 76895.

It is an arithmetic number, because the mean of its divisors is an integer number (30363501).

Almost surely, 2^121301009 is an apocalyptic number.

It is an amenable number.

121301009 is a deficient number, since it is larger than the sum of its proper divisors (152995).

121301009 is an equidigital number, since it uses as much as digits as its factorization.

121301009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152994.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 121301009 is about 11013.6737285976. The cubic root of 121301009 is about 495.0185470723.

The spelling of 121301009 in words is "one hundred twenty-one million, three hundred one thousand, nine".