1122000 has 160 divisors (see below), whose sum is σ = 4178304. Its totient is φ = 256000.

The previous prime is 1121993. The next prime is 1122001. The reversal of 1122000 is 2211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1122000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65992 + ... + 66008.

2^1122000 is an apocalyptic number.

1122000 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 1122000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2089152).

1122000 is an abundant number, since it is smaller than the sum of its proper divisors (3056304).

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

1122000 is a wasteful number, since it uses less digits than its factorization.

1122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 1122000 is about 1059.2450141492. The cubic root of 1122000 is about 103.9116606846.

Adding to 1122000 its reverse (2211), we get a palindrome (1124211).

It can be divided in two parts, 112 and 2000, that added together give a palindrome (2112).

The spelling of 1122000 in words is "one million, one hundred twenty-two thousand".