1122210 has 48 divisors (see below), whose sum is σ = 3005496. Its totient is φ = 290304.

The previous prime is 1122181. The next prime is 1122227. The reversal of 1122210 is 122211.

It can be written as a sum of positive squares in 4 ways, for example, as 986049 + 136161 = 993^2 + 369^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1122192 and 1122201.

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, 3162 + ... + 3498.

2^1122210 is an apocalyptic number.

1122210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1502748).

1122210 is an abundant number, since it is smaller than the sum of its proper divisors (1883286).

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

1122210 is a wasteful number, since it uses less digits than its factorization.

1122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1122210 is about 1059.3441367186. The cubic root of 1122210 is about 103.9181431823.

Adding to 1122210 its reverse (122211), we get a palindrome (1244421).

Subtracting from 1122210 its reverse (122211), we obtain a palindrome (999999).

The spelling of 1122210 in words is "one million, one hundred twenty-two thousand, two hundred ten".