121606073 has 4 divisors (see below), whose sum is σ = 121883520. Its totient is φ = 121328628.

The previous prime is 121606027. The next prime is 121606097. The reversal of 121606073 is 370606121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 370606121 = 43 ⋅8618747.

It is a cyclic number.

It is not a de Polignac number, because 121606073 - 2¹⁰ = 121605049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121606003) 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 in 3 ways as a sum of consecutive naturals, for example, 138065 + ... + 138942.

It is an arithmetic number, because the mean of its divisors is an integer number (30470880).

Almost surely, 2^121606073 is an apocalyptic number.

It is an amenable number.

121606073 is a deficient number, since it is larger than the sum of its proper divisors (277447).

121606073 is an equidigital number, since it uses as much as digits as its factorization.

121606073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277446.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 121606073 is about 11027.5143618134. The cubic root of 121606073 is about 495.4331792905.

The spelling of 121606073 in words is "one hundred twenty-one million, six hundred six thousand, seventy-three".