1222110120222 has 56 divisors (see below), whose sum is σ = 2750418510840. Its totient is φ = 407084272560.

The previous prime is 1222110120157. The next prime is 1222110120223. The reversal of 1222110120222 is 2220210112221.

It is a happy number.

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 = 1222110120195 and 1222110120204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222110120223) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1790197 + ... + 2376767.

It is an arithmetic number, because the mean of its divisors is an integer number (49114616265).

Almost surely, 2^{1222110120222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222110120222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1375209255420).

1222110120222 is an abundant number, since it is smaller than the sum of its proper divisors (1528308390618).

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

1222110120222 is an equidigital number, since it uses as much as digits as its factorization.

1222110120222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588020 (or 588005 counting only the distinct ones).

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

Adding to 1222110120222 its reverse (2220210112221), we get a palindrome (3442320232443).

The spelling of 1222110120222 in words is "one trillion, two hundred twenty-two billion, one hundred ten million, one hundred twenty thousand, two hundred twenty-two".