12021593 has 2 divisors, whose sum is σ = 12021594. Its totient is φ = 12021592.

The previous prime is 12021577. The next prime is 12021629. The reversal of 12021593 is 39512021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10705984 + 1315609 = 3272^2 + 1147^2 .

It is an emirp because it is prime and its reverse (39512021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12021593 - 2⁴ = 12021577 is a prime.

It is not a weakly prime, because it can be changed into another prime (12027593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010796 + 6010797.

It is an arithmetic number, because the mean of its divisors is an integer number (6010797).

Almost surely, 2^12021593 is an apocalyptic number.

It is an amenable number.

12021593 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021593 is an equidigital number, since it uses as much as digits as its factorization.

12021593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12021593 is about 3467.2168954365. The cubic root of 12021593 is about 229.0800874193.

The spelling of 12021593 in words is "twelve million, twenty-one thousand, five hundred ninety-three".