13033421 has 2 divisors, whose sum is σ = 13033422. Its totient is φ = 13033420.

The previous prime is 13033417. The next prime is 13033439. The reversal of 13033421 is 12433031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7562500 + 5470921 = 2750^2 + 2339^2 .

It is a cyclic number.

It is not a de Polignac number, because 13033421 - 2² = 13033417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13033421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13033481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6516710 + 6516711.

It is an arithmetic number, because the mean of its divisors is an integer number (6516711).

Almost surely, 2^13033421 is an apocalyptic number.

It is an amenable number.

13033421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13033421 is an equidigital number, since it uses as much as digits as its factorization.

13033421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 13033421 is about 3610.1829593526. The cubic root of 13033421 is about 235.3347936700.

Adding to 13033421 its reverse (12433031), we get a palindrome (25466452).

The spelling of 13033421 in words is "thirteen million, thirty-three thousand, four hundred twenty-one".