1321222052 has 12 divisors (see below), whose sum is σ = 2316738816. Its totient is φ = 659296680.

The previous prime is 1321222037. The next prime is 1321222117. The reversal of 1321222052 is 2502221231.

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, 326324 + ... + 330347.

It is an arithmetic number, because the mean of its divisors is an integer number (193061568).

Almost surely, 2^1321222052 is an apocalyptic number.

It is an amenable number.

1321222052 is a deficient number, since it is larger than the sum of its proper divisors (995516764).

1321222052 is a wasteful number, since it uses less digits than its factorization.

1321222052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657178 (or 657176 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1321222052 is about 36348.6182956106. The cubic root of 1321222052 is about 1097.2997272253.

Adding to 1321222052 its reverse (2502221231), we get a palindrome (3823443283).

The spelling of 1321222052 in words is "one billion, three hundred twenty-one million, two hundred twenty-two thousand, fifty-two".