1222203263 has 4 divisors (see below), whose sum is σ = 1222352160. Its totient is φ = 1222054368.

The previous prime is 1222203251. The next prime is 1222203341. The reversal of 1222203263 is 3623022221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1222203263 - 2¹⁰ = 1222202239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222203223) 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 3 ways as a sum of consecutive naturals, for example, 61370 + ... + 78807.

It is an arithmetic number, because the mean of its divisors is an integer number (305588040).

Almost surely, 2^1222203263 is an apocalyptic number.

1222203263 is a deficient number, since it is larger than the sum of its proper divisors (148897).

1222203263 is an equidigital number, since it uses as much as digits as its factorization.

1222203263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148896.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1222203263 is about 34960.0237843169. The cubic root of 1222203263 is about 1069.1725815740.

Adding to 1222203263 its reverse (3623022221), we get a palindrome (4845225484).

The spelling of 1222203263 in words is "one billion, two hundred twenty-two million, two hundred three thousand, two hundred sixty-three".