2221535212 has 24 divisors (see below), whose sum is σ = 4210957296. Its totient is φ = 1019393088.

The previous prime is 2221535171. The next prime is 2221535263. The reversal of 2221535212 is 2125351222.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114478 + ... + 132469.

It is an arithmetic number, because the mean of its divisors is an integer number (175456554).

Almost surely, 2^2221535212 is an apocalyptic number.

It is an amenable number.

2221535212 is a deficient number, since it is larger than the sum of its proper divisors (1989422084).

2221535212 is a wasteful number, since it uses less digits than its factorization.

2221535212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247137 (or 247135 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 2221535212 is about 47133.1646720226. The cubic root of 2221535212 is about 1304.8213888247.

Adding to 2221535212 its reverse (2125351222), we get a palindrome (4346886434).

The spelling of 2221535212 in words is "two billion, two hundred twenty-one million, five hundred thirty-five thousand, two hundred twelve".