211222102001220 has 240 divisors, whose sum is σ = 668938101023808. Its totient is φ = 55788311174400.

The previous prime is 211222102001219. The next prime is 211222102001231. The reversal of 211222102001220 is 22100201222112.

It is a happy number.

211222102001220 is a `hidden beast` number, since 2 + 11 + 22 + 210 + 200 + 1 + 220 = 666.

It is a super-2 number, since 2×211222102001220² (a number of 29 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 = 211222102001193 and 211222102001202.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 884087899 + ... + 884326781.

Almost surely, 2^{211222102001220} is an apocalyptic number.

211222102001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211222102001220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334469050511904).

211222102001220 is an abundant number, since it is smaller than the sum of its proper divisors (457715999022588).

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

211222102001220 is a wasteful number, since it uses less digits than its factorization.

211222102001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244112 (or 244101 counting only the distinct ones).

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

Adding to 211222102001220 its reverse (22100201222112), we get a palindrome (233322303223332).

The spelling of 211222102001220 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred two million, one thousand, two hundred twenty".