20332229 has 2 divisors, whose sum is σ = 20332230. Its totient is φ = 20332228.

The previous prime is 20332217. The next prime is 20332241. The reversal of 20332229 is 92223302.

It is a balanced prime because it is at equal distance from previous prime (20332217) and next prime (20332241).

It can be written as a sum of positive squares in only one way, i.e., 11764900 + 8567329 = 3430^2 + 2927^2 .

It is a cyclic number.

It is not a de Polignac number, because 20332229 - 2¹⁶ = 20266693 is a prime.

It is a super-2 number, since 2×20332229² = 826799072216882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20332259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166114 + 10166115.

It is an arithmetic number, because the mean of its divisors is an integer number (10166115).

Almost surely, 2^20332229 is an apocalyptic number.

It is an amenable number.

20332229 is a deficient number, since it is larger than the sum of its proper divisors (1).

20332229 is an equidigital number, since it uses as much as digits as its factorization.

20332229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 20332229 is about 4509.1272991567. The cubic root of 20332229 is about 272.9365289612.

The spelling of 20332229 in words is "twenty million, three hundred thirty-two thousand, two hundred twenty-nine".