2221131532 has 12 divisors (see below), whose sum is σ = 4115626200. Its totient is φ = 1045238336.

The previous prime is 2221131509. The next prime is 2221131533. The reversal of 2221131532 is 2351311222.

It is not an unprimeable number, because it can be changed into a prime (2221131533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16331782 + ... + 16331917.

It is an arithmetic number, because the mean of its divisors is an integer number (342968850).

Almost surely, 2^2221131532 is an apocalyptic number.

It is an amenable number.

2221131532 is a deficient number, since it is larger than the sum of its proper divisors (1894494668).

2221131532 is a wasteful number, since it uses less digits than its factorization.

2221131532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32663720 (or 32663718 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 2221131532 is about 47128.8821424824. The cubic root of 2221131532 is about 1304.7423500586.

Adding to 2221131532 its reverse (2351311222), we get a palindrome (4572442754).

The spelling of 2221131532 in words is "two billion, two hundred twenty-one million, one hundred thirty-one thousand, five hundred thirty-two".