1222112102220 has 36 divisors (see below), whose sum is σ = 3707073377280. Its totient is φ = 325896560544.

The previous prime is 1222112102203. The next prime is 1222112102221. The reversal of 1222112102220 is 222012112221.

It is a happy number.

1222112102220 is a `hidden beast` number, since 1 + 22 + 211 + 210 + 2 + 220 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 1222112102193 and 1222112102202.

It is not an unprimeable number, because it can be changed into a prime (1222112102221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3394755660 + ... + 3394756019.

It is an arithmetic number, because the mean of its divisors is an integer number (102974260480).

Almost surely, 2^{1222112102220} is an apocalyptic number.

1222112102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222112102220 is an abundant number, since it is smaller than the sum of its proper divisors (2484961275060).

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

1222112102220 is a wasteful number, since it uses less digits than its factorization.

1222112102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6789511694 (or 6789511689 counting only the distinct ones).

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

Adding to 1222112102220 its reverse (222012112221), we get a palindrome (1444124214441).

The spelling of 1222112102220 in words is "one trillion, two hundred twenty-two billion, one hundred twelve million, one hundred two thousand, two hundred twenty".