1122020112 has 20 divisors (see below), whose sum is σ = 2898552080. Its totient is φ = 374006688.

The previous prime is 1122020089. The next prime is 1122020131. The reversal of 1122020112 is 2110202211.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 3 ways as a sum of consecutive naturals, for example, 11687662 + ... + 11687757.

It is an arithmetic number, because the mean of its divisors is an integer number (144927604).

Almost surely, 2^1122020112 is an apocalyptic number.

1122020112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1122020112 is an abundant number, since it is smaller than the sum of its proper divisors (1776531968).

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

1122020112 is a wasteful number, since it uses less digits than its factorization.

1122020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23375430 (or 23375424 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1122020112 is about 33496.5686600882. The cubic root of 1122020112 is about 1039.1228155766.

Adding to 1122020112 its reverse (2110202211), we get a palindrome (3232222323).

The spelling of 1122020112 in words is "one billion, one hundred twenty-two million, twenty thousand, one hundred twelve".