221122202222 has 32 divisors (see below), whose sum is σ = 355720273920. Its totient is φ = 102717014400.

The previous prime is 221122202221. The next prime is 221122202227. The reversal of 221122202222 is 222202221122.

It is a junction number, because it is equal to n+sod(n) for n = 221122202194 and 221122202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122202221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19137347 + ... + 19148897.

It is an arithmetic number, because the mean of its divisors is an integer number (11116258560).

Almost surely, 2^221122202222 is an apocalyptic number.

221122202222 is a deficient number, since it is larger than the sum of its proper divisors (134598071698).

221122202222 is a wasteful number, since it uses less digits than its factorization.

221122202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18776.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 221122202222 its reverse (222202221122), we get a palindrome (443324423344).

The spelling of 221122202222 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred two thousand, two hundred twenty-two".