10821229 has 2 divisors, whose sum is σ = 10821230. Its totient is φ = 10821228.

The previous prime is 10821221. The next prime is 10821257. The reversal of 10821229 is 92212801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8008900 + 2812329 = 2830^2 + 1677^2 .

It is a cyclic number.

It is not a de Polignac number, because 10821229 - 2³ = 10821221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10821221) 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 as a sum of consecutive naturals, namely, 5410614 + 5410615.

It is an arithmetic number, because the mean of its divisors is an integer number (5410615).

Almost surely, 2^10821229 is an apocalyptic number.

It is an amenable number.

10821229 is a deficient number, since it is larger than the sum of its proper divisors (1).

10821229 is an equidigital number, since it uses as much as digits as its factorization.

10821229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 10821229 is about 3289.5636488750. The cubic root of 10821229 is about 221.1866253207.

It can be divided in two parts, 108212 and 29, that added together give a square (108241 = 329²).

The spelling of 10821229 in words is "ten million, eight hundred twenty-one thousand, two hundred twenty-nine".