2221003312 has 20 divisors (see below), whose sum is σ = 4694393736. Its totient is φ = 1009546880.

The previous prime is 2221003297. The next prime is 2221003331. The reversal of 2221003312 is 2133001222.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6309493 + ... + 6309844.

Almost surely, 2^2221003312 is an apocalyptic number.

2221003312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2221003312 is an abundant number, since it is smaller than the sum of its proper divisors (2473390424).

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

2221003312 is a wasteful number, since it uses less digits than its factorization.

2221003312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12619356 (or 12619350 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2221003312 is about 47127.5218105090. The cubic root of 2221003312 is about 1304.7172431434.

Adding to 2221003312 its reverse (2133001222), we get a palindrome (4354004534).

The spelling of 2221003312 in words is "two billion, two hundred twenty-one million, three thousand, three hundred twelve".