12220493 has 4 divisors (see below), whose sum is σ = 12427680. Its totient is φ = 12013308.

The previous prime is 12220489. The next prime is 12220519. The reversal of 12220493 is 39402221.

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.

It is a cyclic number.

It is not a de Polignac number, because 12220493 - 2² = 12220489 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220193) 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, 103505 + ... + 103622.

It is an arithmetic number, because the mean of its divisors is an integer number (3106920).

Almost surely, 2^12220493 is an apocalyptic number.

It is an amenable number.

12220493 is a deficient number, since it is larger than the sum of its proper divisors (207187).

12220493 is an equidigital number, since it uses as much as digits as its factorization.

12220493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207186.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 12220493 is about 3495.7821728477. The cubic root of 12220493 is about 230.3365771631.

The spelling of 12220493 in words is "twelve million, two hundred twenty thousand, four hundred ninety-three".