2221200165712 has 20 divisors (see below), whose sum is σ = 4694809441536. Its totient is φ = 1009636438880.

The previous prime is 2221200165703. The next prime is 2221200165713. The reversal of 2221200165712 is 2175610021222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221200165713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6310227568 + ... + 6310227919.

Almost surely, 2^{2221200165712} is an apocalyptic number.

2221200165712 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2221200165712 is an abundant number, since it is smaller than the sum of its proper divisors (2473609275824).

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

2221200165712 is a wasteful number, since it uses less digits than its factorization.

2221200165712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12620455506 (or 12620455500 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 2221200165712 its reverse (2175610021222), we get a palindrome (4396810186934).

The spelling of 2221200165712 in words is "two trillion, two hundred twenty-one billion, two hundred million, one hundred sixty-five thousand, seven hundred twelve".