1322213121 has 12 divisors (see below), whose sum is σ = 1992901248. Its totient is φ = 843150264.

The previous prime is 1322213089. The next prime is 1322213159. The reversal of 1322213121 is 1213122231.

1322213121 is a `hidden beast` number, since 132 + 221 + 312 + 1 = 666.

It is not a de Polignac number, because 1322213121 - 2⁵ = 1322213089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1322213094 and 1322213103.

It is not an unprimeable number, because it can be changed into a prime (1322217121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3193545 + ... + 3193958.

It is an arithmetic number, because the mean of its divisors is an integer number (166075104).

Almost surely, 2^1322213121 is an apocalyptic number.

It is an amenable number.

1322213121 is a deficient number, since it is larger than the sum of its proper divisors (670688127).

1322213121 is a wasteful number, since it uses less digits than its factorization.

1322213121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6387532 (or 6387529 counting only the distinct ones).

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

The square root of 1322213121 is about 36362.2485690860. The cubic root of 1322213121 is about 1097.5740257906.

Adding to 1322213121 its reverse (1213122231), we get a palindrome (2535335352).

The spelling of 1322213121 in words is "one billion, three hundred twenty-two million, two hundred thirteen thousand, one hundred twenty-one".