1321223122 has 32 divisors (see below), whose sum is σ = 2075310720. Its totient is φ = 630067200.

The previous prime is 1321223107. The next prime is 1321223143. The reversal of 1321223122 is 2213221231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321223122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2250513 + ... + 2251099.

It is an arithmetic number, because the mean of its divisors is an integer number (64853460).

Almost surely, 2^1321223122 is an apocalyptic number.

1321223122 is a deficient number, since it is larger than the sum of its proper divisors (754087598).

1321223122 is a wasteful number, since it uses less digits than its factorization.

1321223122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026.

The product of its digits is 288, while the sum is 19.

The square root of 1321223122 is about 36348.6330141864. The cubic root of 1321223122 is about 1097.3000234436.

Adding to 1321223122 its reverse (2213221231), we get a palindrome (3534444353).

The spelling of 1321223122 in words is "one billion, three hundred twenty-one million, two hundred twenty-three thousand, one hundred twenty-two".