12021385 has 8 divisors (see below), whose sum is σ = 14459976. Its totient is φ = 9594240.

The previous prime is 12021367. The next prime is 12021403. The reversal of 12021385 is 58312021.

It is an interprime number because it is at equal distance from previous prime (12021367) and next prime (12021403).

It can be written as a sum of positive squares in 4 ways, for example, as 4447881 + 7573504 = 2109^2 + 2752^2 .

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

It is not a de Polignac number, because 12021385 - 2⁵ = 12021353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346 + ... + 4915.

It is an arithmetic number, because the mean of its divisors is an integer number (1807497).

Almost surely, 2^12021385 is an apocalyptic number.

It is an amenable number.

12021385 is a deficient number, since it is larger than the sum of its proper divisors (2438591).

12021385 is an equidigital number, since it uses as much as digits as its factorization.

12021385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 12021385 is about 3467.1869000675. The cubic root of 12021385 is about 229.0787662153.

The spelling of 12021385 in words is "twelve million, twenty-one thousand, three hundred eighty-five".