1322011221 has 16 divisors (see below), whose sum is σ = 1852428864. Its totient is φ = 837575424.

The previous prime is 1322011219. The next prime is 1322011247. The reversal of 1322011221 is 1221102231.

It is not a de Polignac number, because 1322011221 - 2¹ = 1322011219 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1322011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322011211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133716 + ... + 143261.

It is an arithmetic number, because the mean of its divisors is an integer number (115776804).

Almost surely, 2^1322011221 is an apocalyptic number.

It is an amenable number.

1322011221 is a deficient number, since it is larger than the sum of its proper divisors (530417643).

1322011221 is a wasteful number, since it uses less digits than its factorization.

1322011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277060.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1322011221 is about 36359.4722321433. The cubic root of 1322011221 is about 1097.5181569667.

Adding to 1322011221 its reverse (1221102231), we get a palindrome (2543113452).

The spelling of 1322011221 in words is "one billion, three hundred twenty-two million, eleven thousand, two hundred twenty-one".