1221222322 has 8 divisors (see below), whose sum is σ = 1835433900. Its totient is φ = 609411024.

The previous prime is 1221222287. The next prime is 1221222341. The reversal of 1221222322 is 2232221221.

It can be written as a sum of positive squares in 2 ways, for example, as 1220733721 + 488601 = 34939^2 + 699^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1221222322.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598797 + ... + 600832.

Almost surely, 2^1221222322 is an apocalyptic number.

1221222322 is a deficient number, since it is larger than the sum of its proper divisors (614211578).

1221222322 is a wasteful number, since it uses less digits than its factorization.

1221222322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200140.

The product of its digits is 384, while the sum is 19.

The square root of 1221222322 is about 34945.9915011722. The cubic root of 1221222322 is about 1068.8864655173.

Adding to 1221222322 its reverse (2232221221), we get a palindrome (3453443543).

The spelling of 1221222322 in words is "one billion, two hundred twenty-one million, two hundred twenty-two thousand, three hundred twenty-two".