16121173 has 8 divisors (see below), whose sum is σ = 16698528. Its totient is φ = 15553104.

The previous prime is 16121143. The next prime is 16121179. The reversal of 16121173 is 37112161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16121173 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16121179) 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 7 ways as a sum of consecutive naturals, for example, 1311 + ... + 5827.

It is an arithmetic number, because the mean of its divisors is an integer number (2087316).

Almost surely, 2^16121173 is an apocalyptic number.

It is an amenable number.

16121173 is a deficient number, since it is larger than the sum of its proper divisors (577355).

16121173 is an equidigital number, since it uses as much as digits as its factorization.

16121173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643.

The product of its digits is 252, while the sum is 22.

The square root of 16121173 is about 4015.1180555496. The cubic root of 16121173 is about 252.6187292494.

The spelling of 16121173 in words is "sixteen million, one hundred twenty-one thousand, one hundred seventy-three".