43222229 has 2 divisors, whose sum is σ = 43222230. Its totient is φ = 43222228.

The previous prime is 43222219. The next prime is 43222237. The reversal of 43222229 is 92222234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41899729 + 1322500 = 6473^2 + 1150^2 .

It is a cyclic number.

It is not a de Polignac number, because 43222229 - 2⁴ = 43222213 is a prime.

It is a super-2 number, since 2×43222229² = 3736322159456882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43222198 and 43222207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43222219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21611114 + 21611115.

It is an arithmetic number, because the mean of its divisors is an integer number (21611115).

Almost surely, 2^43222229 is an apocalyptic number.

It is an amenable number.

43222229 is a deficient number, since it is larger than the sum of its proper divisors (1).

43222229 is an equidigital number, since it uses as much as digits as its factorization.

43222229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

The square root of 43222229 is about 6574.3614899091. The cubic root of 43222229 is about 350.9423015902.

The spelling of 43222229 in words is "forty-three million, two hundred twenty-two thousand, two hundred twenty-nine".