12921193 has 8 divisors (see below), whose sum is σ = 13771008. Its totient is φ = 12095424.

The previous prime is 12921179. The next prime is 12921217. The reversal of 12921193 is 39112921.

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

It is not a de Polignac number, because 12921193 - 2⁹ = 12920681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12921133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4896 + ... + 7057.

It is an arithmetic number, because the mean of its divisors is an integer number (1721376).

Almost surely, 2^12921193 is an apocalyptic number.

It is an amenable number.

12921193 is a deficient number, since it is larger than the sum of its proper divisors (849815).

12921193 is a wasteful number, since it uses less digits than its factorization.

12921193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12023.

The product of its digits is 972, while the sum is 28.

The square root of 12921193 is about 3594.6060980308. The cubic root of 12921193 is about 234.6573730375.

It can be divided in two parts, 1292 and 1193, that added together give a triangular number (2485 = T₇₀).

The spelling of 12921193 in words is "twelve million, nine hundred twenty-one thousand, one hundred ninety-three".