12021353 has 2 divisors, whose sum is σ = 12021354. Its totient is φ = 12021352.

The previous prime is 12021311. The next prime is 12021367. The reversal of 12021353 is 35312021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10413529 + 1607824 = 3227^2 + 1268^2 .

It is an emirp because it is prime and its reverse (35312021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12021353 - 2²⁰ = 10972777 is a prime.

It is not a weakly prime, because it can be changed into another prime (12021953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010676 + 6010677.

It is an arithmetic number, because the mean of its divisors is an integer number (6010677).

Almost surely, 2^12021353 is an apocalyptic number.

It is an amenable number.

12021353 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021353 is an equidigital number, since it uses as much as digits as its factorization.

12021353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 12021353 is about 3467.1822853724. The cubic root of 12021353 is about 229.0785629517.

Adding to 12021353 its reverse (35312021), we get a palindrome (47333374).

It can be divided in two parts, 1202 and 1353, that multiplied together give a triangular number (1626306 = T₁₈₀₃).

The spelling of 12021353 in words is "twelve million, twenty-one thousand, three hundred fifty-three".