211222022220 has 192 divisors, whose sum is σ = 740000378880. Its totient is φ = 49553510400.

The previous prime is 211222022197. The next prime is 211222022227. The reversal of 211222022220 is 22220222112.

211222022220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211222022220² (a number of 23 digits) contains 22 as substring.

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 = 211222022193 and 211222022202.

It is not an unprimeable number, because it can be changed into a prime (211222022227) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 389397 + ... + 757676.

It is an arithmetic number, because the mean of its divisors is an integer number (3854168640).

Almost surely, 2^211222022220 is an apocalyptic number.

211222022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211222022220 is an abundant number, since it is smaller than the sum of its proper divisors (528778356660).

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

211222022220 is a wasteful number, since it uses less digits than its factorization.

211222022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147133 (or 1147125 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 211222022220 its reverse (22220222112), we get a palindrome (233442244332).

The spelling of 211222022220 in words is "two hundred eleven billion, two hundred twenty-two million, twenty-two thousand, two hundred twenty".