212221033222 has 16 divisors (see below), whose sum is σ = 347475240000. Its totient is φ = 96407312040.

The previous prime is 212221033217. The next prime is 212221033253. The reversal of 212221033222 is 222330122212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 212221033193 and 212221033202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2801472 + ... + 2876227.

It is an arithmetic number, because the mean of its divisors is an integer number (21717202500).

Almost surely, 2^212221033222 is an apocalyptic number.

212221033222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212221033222 is a deficient number, since it is larger than the sum of its proper divisors (135254206778).

212221033222 is a wasteful number, since it uses less digits than its factorization.

212221033222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5679411.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 212221033222 its reverse (222330122212), we get a palindrome (434551155434).

The spelling of 212221033222 in words is "two hundred twelve billion, two hundred twenty-one million, thirty-three thousand, two hundred twenty-two".