2221201122112 has 56 divisors (see below), whose sum is σ = 5333682544704. Its totient is φ = 895946668032.

The previous prime is 2221201122097. The next prime is 2221201122139. The reversal of 2221201122112 is 2112211021222.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 2221201122112.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 145817038 + ... + 145832269.

Almost surely, 2^{2221201122112} is an apocalyptic number.

It is an amenable number.

2221201122112 is an abundant number, since it is smaller than the sum of its proper divisors (3112481422592).

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

2221201122112 is a wasteful number, since it uses less digits than its factorization.

2221201122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291649343 (or 291649333 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2221201122112 its reverse (2112211021222), we get a palindrome (4333412143334).

The spelling of 2221201122112 in words is "two trillion, two hundred twenty-one billion, two hundred one million, one hundred twenty-two thousand, one hundred twelve".