220211211222 has 64 divisors (see below), whose sum is σ = 496043870400. Its totient is φ = 72406310400.

The previous prime is 220211211217. The next prime is 220211211257. The reversal of 220211211222 is 222112112022.

It is a happy number.

220211211222 is a `hidden beast` number, since 2 + 20 + 211 + 211 + 222 = 666.

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 = 220211211195 and 220211211204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1392078 + ... + 1542174.

It is an arithmetic number, because the mean of its divisors is an integer number (7750685475).

Almost surely, 2^220211211222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220211211222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248021935200).

220211211222 is an abundant number, since it is smaller than the sum of its proper divisors (275832659178).

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

220211211222 is a wasteful number, since it uses less digits than its factorization.

220211211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150478 (or 150472 counting only the distinct ones).

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

Adding to 220211211222 its reverse (222112112022), we get a palindrome (442323323244).

The spelling of 220211211222 in words is "two hundred twenty billion, two hundred eleven million, two hundred eleven thousand, two hundred twenty-two".