1222020112 has 80 divisors (see below), whose sum is σ = 2655633600. Its totient is φ = 541347840.

The previous prime is 1222020083. The next prime is 1222020133. The reversal of 1222020112 is 2110202221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1222020092 and 1222020101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 924412 + ... + 925732.

It is an arithmetic number, because the mean of its divisors is an integer number (33195420).

Almost surely, 2^1222020112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222020112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1327816800).

1222020112 is an abundant number, since it is smaller than the sum of its proper divisors (1433613488).

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

1222020112 is a wasteful number, since it uses less digits than its factorization.

1222020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544 (or 1538 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1222020112 is about 34957.4042514601. The cubic root of 1222020112 is about 1069.1191726156.

Adding to 1222020112 its reverse (2110202221), we get a palindrome (3332222333).

The spelling of 1222020112 in words is "one billion, two hundred twenty-two million, twenty thousand, one hundred twelve".