1122120312 has 64 divisors (see below), whose sum is σ = 2902166400. Its totient is φ = 361272960.

The previous prime is 1122120301. The next prime is 1122120317. The reversal of 1122120312 is 2130212211.

It is a junction number, because it is equal to n+sod(n) for n = 1122120291 and 1122120300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122120317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118887 + ... + 127977.

It is an arithmetic number, because the mean of its divisors is an integer number (45346350).

Almost surely, 2^1122120312 is an apocalyptic number.

1122120312 is a gapful number since it is divisible by the number (12) 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 1122120312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1451083200).

1122120312 is an abundant number, since it is smaller than the sum of its proper divisors (1780046088).

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

1122120312 is a wasteful number, since it uses less digits than its factorization.

1122120312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9276 (or 9272 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1122120312 is about 33498.0643022847. The cubic root of 1122120312 is about 1039.1537469910.

Adding to 1122120312 its reverse (2130212211), we get a palindrome (3252332523).

The spelling of 1122120312 in words is "one billion, one hundred twenty-two million, one hundred twenty thousand, three hundred twelve".