1221303422 has 8 divisors (see below), whose sum is σ = 1863005400. Its totient is φ = 600301624.

The previous prime is 1221303401. The next prime is 1221303439. The reversal of 1221303422 is 2243031221.

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

It is a junction number, because it is equal to n+sod(n) for n = 1221303394 and 1221303403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5174897 + ... + 5175132.

It is an arithmetic number, because the mean of its divisors is an integer number (232875675).

Almost surely, 2^1221303422 is an apocalyptic number.

1221303422 is a deficient number, since it is larger than the sum of its proper divisors (641701978).

1221303422 is a wasteful number, since it uses less digits than its factorization.

1221303422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10350090.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1221303422 is about 34947.1518438914. The cubic root of 1221303422 is about 1068.9101261759.

Adding to 1221303422 its reverse (2243031221), we get a palindrome (3464334643).

The spelling of 1221303422 in words is "one billion, two hundred twenty-one million, three hundred three thousand, four hundred twenty-two".