222211210122 has 72 divisors (see below), whose sum is σ = 529315008768. Its totient is φ = 67322795760.

The previous prime is 222211210079. The next prime is 222211210129. The reversal of 222211210122 is 221012112222.

It is a happy number.

222211210122 is a `hidden beast` number, since 222 + 211 + 210 + 1 + 22 = 666.

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 = 222211210095 and 222211210104.

It is not an unprimeable number, because it can be changed into a prime (222211210129) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 16299873 + ... + 16313499.

It is an arithmetic number, because the mean of its divisors is an integer number (7351597344).

Almost surely, 2^222211210122 is an apocalyptic number.

222211210122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

222211210122 is an abundant number, since it is smaller than the sum of its proper divisors (307103798646).

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

222211210122 is a wasteful number, since it uses less digits than its factorization.

222211210122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21144 (or 21130 counting only the distinct ones).

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

Adding to 222211210122 its reverse (221012112222), we get a palindrome (443223322344).

The spelling of 222211210122 in words is "two hundred twenty-two billion, two hundred eleven million, two hundred ten thousand, one hundred twenty-two".