1320001222 has 4 divisors (see below), whose sum is σ = 1980001836. Its totient is φ = 660000610.

The previous prime is 1320001213. The next prime is 1320001223. The reversal of 1320001222 is 2221000231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320001223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330000304 + ... + 330000307.

It is an arithmetic number, because the mean of its divisors is an integer number (495000459).

Almost surely, 2^1320001222 is an apocalyptic number.

1320001222 is a deficient number, since it is larger than the sum of its proper divisors (660000614).

1320001222 is an equidigital number, since it uses as much as digits as its factorization.

1320001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660000613.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1320001222 is about 36331.8210663875. The cubic root of 1320001222 is about 1096.9616489932.

Adding to 1320001222 its reverse (2221000231), we get a palindrome (3541001453).

Subtracting 1320001222 from its reverse (2221000231), we obtain a palindrome (900999009).

The spelling of 1320001222 in words is "one billion, three hundred twenty million, one thousand, two hundred twenty-two".