2221535512 has 32 divisors (see below), whose sum is σ = 4762149120. Its totient is φ = 951743520.

The previous prime is 2221535467. The next prime is 2221535539. The reversal of 2221535512 is 2155351222.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 205687 + ... + 216217.

It is an arithmetic number, because the mean of its divisors is an integer number (148817160).

Almost surely, 2^2221535512 is an apocalyptic number.

It is an amenable number.

2221535512 is an abundant number, since it is smaller than the sum of its proper divisors (2540613608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221535512 is a wasteful number, since it uses less digits than its factorization.

2221535512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14311 (or 14307 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 2221535512 is about 47133.1678544950. The cubic root of 2221535512 is about 1304.8214475598.

Adding to 2221535512 its reverse (2155351222), we get a palindrome (4376886734).

The spelling of 2221535512 in words is "two billion, two hundred twenty-one million, five hundred thirty-five thousand, five hundred twelve".