2221121110112 has 96 divisors (see below), whose sum is σ = 4450612068000. Its totient is φ = 1091005267968.

The previous prime is 2221121110001. The next prime is 2221121110123. The reversal of 2221121110112 is 2110111211222.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 343345214 + ... + 343351682.

It is an arithmetic number, because the mean of its divisors is an integer number (46360542375).

Almost surely, 2^{2221121110112} is an apocalyptic number.

It is an amenable number.

2221121110112 is an abundant number, since it is smaller than the sum of its proper divisors (2229490957888).

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

2221121110112 is a wasteful number, since it uses less digits than its factorization.

2221121110112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7408 (or 7400 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2221121110112 its reverse (2110111211222), we get a palindrome (4331232321334).

The spelling of 2221121110112 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred ten thousand, one hundred twelve".