1222102220022 has 64 divisors (see below), whose sum is σ = 2740206490560. Its totient is φ = 403704870912.

The previous prime is 1222102220021. The next prime is 1222102220033. The reversal of 1222102220022 is 2200222012221.

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 = 1222102219977 and 1222102220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222102220021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76102218 + ... + 76118274.

It is an arithmetic number, because the mean of its divisors is an integer number (42815726415).

Almost surely, 2^{1222102220022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222102220022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1370103245280).

1222102220022 is an abundant number, since it is smaller than the sum of its proper divisors (1518104270538).

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

1222102220022 is a wasteful number, since it uses less digits than its factorization.

1222102220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28654 (or 28648 counting only the distinct ones).

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

Adding to 1222102220022 its reverse (2200222012221), we get a palindrome (3422324232243).

The spelling of 1222102220022 in words is "one trillion, two hundred twenty-two billion, one hundred two million, two hundred twenty thousand, twenty-two".