211220101002222 has 192 divisors, whose sum is σ = 518271085106880. Its totient is φ = 63386384993280.

The previous prime is 211220101002103. The next prime is 211220101002289. The reversal of 211220101002222 is 222200101022112.

It is a happy number.

211220101002222 is a `hidden beast` number, since 211 + 220 + 1 + 0 + 10 + 0 + 2 + 222 = 666.

It is a super-2 number, since 2×211220101002222² (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 = 211220101002195 and 211220101002204.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 4150252608 + ... + 4150303500.

It is an arithmetic number, because the mean of its divisors is an integer number (2699328568265).

Almost surely, 2^{211220101002222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211220101002222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259135542553440).

211220101002222 is an abundant number, since it is smaller than the sum of its proper divisors (307050984104658).

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

211220101002222 is a wasteful number, since it uses less digits than its factorization.

211220101002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54516 (or 54469 counting only the distinct ones).

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

Adding to 211220101002222 its reverse (222200101022112), we get a palindrome (433420202024334).

The spelling of 211220101002222 in words is "two hundred eleven trillion, two hundred twenty billion, one hundred one million, two thousand, two hundred twenty-two".