1222434205 has 8 divisors (see below), whose sum is σ = 1490969304. Its totient is φ = 961915200.

The previous prime is 1222434203. The next prime is 1222434211. The reversal of 1222434205 is 5024342221.

It can be written as a sum of positive squares in 4 ways, for example, as 1490841 + 1220943364 = 1221^2 + 34942^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222434205 - 2¹ = 1222434203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222434205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222434203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2003686 + ... + 2004295.

It is an arithmetic number, because the mean of its divisors is an integer number (186371163).

Almost surely, 2^1222434205 is an apocalyptic number.

It is an amenable number.

1222434205 is a deficient number, since it is larger than the sum of its proper divisors (268535099).

1222434205 is an equidigital number, since it uses as much as digits as its factorization.

1222434205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008047.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1222434205 is about 34963.3265722814. The cubic root of 1222434205 is about 1069.2399193378.

Adding to 1222434205 its reverse (5024342221), we get a palindrome (6246776426).

The spelling of 1222434205 in words is "one billion, two hundred twenty-two million, four hundred thirty-four thousand, two hundred five".