1222229 has 2 divisors, whose sum is σ = 1222230. Its totient is φ = 1222228.

The previous prime is 1222219. The next prime is 1222231. The reversal of 1222229 is 9222221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 970225 + 252004 = 985^2 + 502^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222229 is a prime.

Together with 1222231, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1222229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611114 + 611115.

It is an arithmetic number, because the mean of its divisors is an integer number (611115).

2^1222229 is an apocalyptic number.

It is an amenable number.

1222229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222229 is an equidigital number, since it uses as much as digits as its factorization.

1222229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 1222229 is about 1105.5446621462. The cubic root of 1222229 is about 106.9180086354.

The spelling of 1222229 in words is "one million, two hundred twenty-two thousand, two hundred twenty-nine".