1222221122120 has 64 divisors (see below), whose sum is σ = 2895059016000. Its totient is φ = 463105513728.

The previous prime is 1222221122113. The next prime is 1222221122131. The reversal of 1222221122120 is 212211222221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1222221122092 and 1222221122101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7060766 + ... + 7231794.

It is an arithmetic number, because the mean of its divisors is an integer number (45235297125).

Almost surely, 2^{1222221122120} is an apocalyptic number.

1222221122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222221122120 is an abundant number, since it is smaller than the sum of its proper divisors (1672837893880).

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

1222221122120 is a wasteful number, since it uses less digits than its factorization.

1222221122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180462 (or 180458 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1222221122120 its reverse (212211222221), we get a palindrome (1434432344341).

The spelling of 1222221122120 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred twenty".