2011221012222 has 48 divisors (see below), whose sum is σ = 4631130138960. Its totient is φ = 628625654016.

The previous prime is 2011221012187. The next prime is 2011221012259. The reversal of 2011221012222 is 2222101221102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2011221012195 and 2011221012204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12134448 + ... + 12299075.

It is an arithmetic number, because the mean of its divisors is an integer number (96481877895).

Almost surely, 2^{2011221012222} is an apocalyptic number.

2011221012222 is an abundant number, since it is smaller than the sum of its proper divisors (2619909126738).

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

2011221012222 is a wasteful number, since it uses less digits than its factorization.

2011221012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24433817 (or 24433814 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2011221012222 its reverse (2222101221102), we get a palindrome (4233322233324).

The spelling of 2011221012222 in words is "two trillion, eleven billion, two hundred twenty-one million, twelve thousand, two hundred twenty-two".