1122112022112 has 144 divisors (see below), whose sum is σ = 3384342994032. Its totient is φ = 351448473600.

The previous prime is 1122112022077. The next prime is 1122112022153. The reversal of 1122112022112 is 2112202112211.

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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2751823 + ... + 3133169.

It is an arithmetic number, because the mean of its divisors is an integer number (23502381903).

Almost surely, 2^{1122112022112} is an apocalyptic number.

1122112022112 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 1122112022112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1692171497016).

1122112022112 is an abundant number, since it is smaller than the sum of its proper divisors (2262230971920).

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

1122112022112 is a wasteful number, since it uses less digits than its factorization.

1122112022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381981 (or 381970 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1122112022112 its reverse (2112202112211), we get a palindrome (3234314134323).

Subtracting 1122112022112 from its reverse (2112202112211), we obtain a palindrome (990090090099).

The spelling of 1122112022112 in words is "one trillion, one hundred twenty-two billion, one hundred twelve million, twenty-two thousand, one hundred twelve".