1222011000320 has 160 divisors (see below), whose sum is σ = 3224616959520. Its totient is φ = 440434032640.

The previous prime is 1222011000283. The next prime is 1222011000361. The reversal of 1222011000320 is 230001102221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is a junction number, because it is equal to n+sod(n) for n = 1222011000295 and 1222011000304.

It is a congruent number.

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, 2990066 + ... + 3374094.

It is an arithmetic number, because the mean of its divisors is an integer number (20153855997).

Almost surely, 2^{1222011000320} is an apocalyptic number.

1222011000320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222011000320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1612308479760).

1222011000320 is an abundant number, since it is smaller than the sum of its proper divisors (2002605959200).

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

1222011000320 is a wasteful number, since it uses less digits than its factorization.

1222011000320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384176 (or 384160 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1222011000320 its reverse (230001102221), we get a palindrome (1452012102541).

The spelling of 1222011000320 in words is "one trillion, two hundred twenty-two billion, eleven million, three hundred twenty", and thus it is an aban number.