1222433661 has 8 divisors (see below), whose sum is σ = 1644336000. Its totient is φ = 807743552.

The previous prime is 1222433657. The next prime is 1222433683. The reversal of 1222433661 is 1663342221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222433661 - 2² = 1222433657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222437661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1802661 + ... + 1803338.

It is an arithmetic number, because the mean of its divisors is an integer number (205542000).

Almost surely, 2^1222433661 is an apocalyptic number.

It is an amenable number.

1222433661 is a deficient number, since it is larger than the sum of its proper divisors (421902339).

1222433661 is a wasteful number, since it uses less digits than its factorization.

1222433661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606115.

The product of its digits is 10368, while the sum is 30.

The square root of 1222433661 is about 34963.3187927004. The cubic root of 1222433661 is about 1069.2397607290.

Adding to 1222433661 its reverse (1663342221), we get a palindrome (2885775882).

The spelling of 1222433661 in words is "one billion, two hundred twenty-two million, four hundred thirty-three thousand, six hundred sixty-one".