2222011122221 has 32 divisors (see below), whose sum is σ = 2557366456320. Its totient is φ = 1910867112000.

The previous prime is 2222011122209. The next prime is 2222011122239. The reversal of 2222011122221 is 1222211102222.

It is a de Polignac number, because none of the positive numbers 2^k-2222011122221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2222011122193 and 2222011122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222011127221) 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 31 ways as a sum of consecutive naturals, for example, 22514060 + ... + 22612538.

It is an arithmetic number, because the mean of its divisors is an integer number (79917701760).

Almost surely, 2^{2222011122221} is an apocalyptic number.

It is an amenable number.

2222011122221 is a deficient number, since it is larger than the sum of its proper divisors (335355334099).

2222011122221 is a wasteful number, since it uses less digits than its factorization.

2222011122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99497.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2222011122221 its reverse (1222211102222), we get a palindrome (3444222224443).

The spelling of 2222011122221 in words is "two trillion, two hundred twenty-two billion, eleven million, one hundred twenty-two thousand, two hundred twenty-one".