211222110220 has 24 divisors (see below), whose sum is σ = 483890653008. Its totient is φ = 76808040000.

The previous prime is 211222110179. The next prime is 211222110223. The reversal of 211222110220 is 22011222112.

It is a happy number.

It is a super-2 number, since 2×211222110220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211222110194 and 211222110203.

It is not an unprimeable number, because it can be changed into a prime (211222110223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480050031 + ... + 480050470.

It is an arithmetic number, because the mean of its divisors is an integer number (20162110542).

Almost surely, 2^211222110220 is an apocalyptic number.

211222110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211222110220 is an abundant number, since it is smaller than the sum of its proper divisors (272668542788).

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

211222110220 is a wasteful number, since it uses less digits than its factorization.

211222110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960100521 (or 960100519 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211222110220 its reverse (22011222112), we get a palindrome (233233332332).

The spelling of 211222110220 in words is "two hundred eleven billion, two hundred twenty-two million, one hundred ten thousand, two hundred twenty".