1222012120320 has 144 divisors (see below), whose sum is σ = 4336445910720. Its totient is φ = 325869889536.

The previous prime is 1222012120289. The next prime is 1222012120321. The reversal of 1222012120320 is 230212102221.

1222012120320 is a `hidden beast` number, since 1 + 2 + 220 + 1 + 2 + 120 + 320 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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 = 1222012120293 and 1222012120302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222012120321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17645014 + ... + 17714133.

Almost surely, 2^{1222012120320} is an apocalyptic number.

1222012120320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222012120320 is an abundant number, since it is smaller than the sum of its proper divisors (3114433790400).

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

1222012120320 is an equidigital number, since it uses as much as digits as its factorization.

1222012120320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35359177 (or 35359157 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1222012120320 its reverse (230212102221), we get a palindrome (1452224222541).

The spelling of 1222012120320 in words is "one trillion, two hundred twenty-two billion, twelve million, one hundred twenty thousand, three hundred twenty".