12193021 has 8 divisors (see below), whose sum is σ = 12853080. Its totient is φ = 11548992.

The previous prime is 12193009. The next prime is 12193033. The reversal of 12193021 is 12039121.

It is an interprime number because it is at equal distance from previous prime (12193009) and next prime (12193033).

It can be written as a sum of positive squares in 4 ways, for example, as 1920996 + 10272025 = 1386^2 + 3205^2 .

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-12193021 is a prime.

It is a super-2 number, since 2×12193021² = 297339522212882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12193021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12193001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2430 + ... + 5503.

It is an arithmetic number, because the mean of its divisors is an integer number (1606635).

Almost surely, 2^12193021 is an apocalyptic number.

It is an amenable number.

12193021 is a deficient number, since it is larger than the sum of its proper divisors (660059).

12193021 is an equidigital number, since it uses as much as digits as its factorization.

12193021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8015.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 12193021 is about 3491.8506554548. The cubic root of 12193021 is about 230.1638467047.

The spelling of 12193021 in words is "twelve million, one hundred ninety-three thousand, twenty-one".