222011221122 has 48 divisors (see below), whose sum is σ = 494418532608. Its totient is φ = 71958529440.

The previous prime is 222011221099. The next prime is 222011221129. The reversal of 222011221122 is 221122110222.

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 = 222011221095 and 222011221104.

It is not an unprimeable number, because it can be changed into a prime (222011221129) 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 23 ways as a sum of consecutive naturals, for example, 470529 + ... + 815732.

It is an arithmetic number, because the mean of its divisors is an integer number (10300386096).

Almost surely, 2^222011221122 is an apocalyptic number.

222011221122 is an abundant number, since it is smaller than the sum of its proper divisors (272407311486).

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

222011221122 is a wasteful number, since it uses less digits than its factorization.

222011221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286535 (or 1286532 counting only the distinct ones).

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

Adding to 222011221122 its reverse (221122110222), we get a palindrome (443133331344).

The spelling of 222011221122 in words is "two hundred twenty-two billion, eleven million, two hundred twenty-one thousand, one hundred twenty-two".