1321203122 has 16 divisors (see below), whose sum is σ = 2116065600. Its totient is φ = 617183952.

The previous prime is 1321203113. The next prime is 1321203137. The reversal of 1321203122 is 2213021231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321203122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331997 + ... + 335952.

It is an arithmetic number, because the mean of its divisors is an integer number (132254100).

Almost surely, 2^1321203122 is an apocalyptic number.

1321203122 is a deficient number, since it is larger than the sum of its proper divisors (794862478).

1321203122 is a wasteful number, since it uses less digits than its factorization.

1321203122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668017.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1321203122 is about 36348.3578996356. The cubic root of 1321203122 is about 1097.2944866268.

Adding to 1321203122 its reverse (2213021231), we get a palindrome (3534224353).

The spelling of 1321203122 in words is "one billion, three hundred twenty-one million, two hundred three thousand, one hundred twenty-two".