1322121321 has 12 divisors (see below), whose sum is σ = 1918146672. Its totient is φ = 877529976.

The previous prime is 1322121319. The next prime is 1322121329. The reversal of 1322121321 is 1231212231.

1322121321 is a `hidden beast` number, since 1 + 322 + 1 + 21 + 321 = 666.

It is not a de Polignac number, because 1322121321 - 2¹ = 1322121319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1322121294 and 1322121303.

It is not an unprimeable number, because it can be changed into a prime (1322121329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321531 + ... + 325616.

It is an arithmetic number, because the mean of its divisors is an integer number (159845556).

Almost surely, 2^1322121321 is an apocalyptic number.

It is an amenable number.

1322121321 is a deficient number, since it is larger than the sum of its proper divisors (596025351).

1322121321 is a wasteful number, since it uses less digits than its factorization.

1322121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647380 (or 647377 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1322121321 is about 36360.9862490005. The cubic root of 1322121321 is about 1097.5486240290.

Adding to 1322121321 its reverse (1231212231), we get a palindrome (2553333552).

The spelling of 1322121321 in words is "one billion, three hundred twenty-two million, one hundred twenty-one thousand, three hundred twenty-one".