1131222 has 16 divisors (see below), whose sum is σ = 2381760. Its totient is φ = 357192.
The previous prime is 1131217. The next prime is 1131223. The reversal of 1131222 is 2221311.
It is a nude number because it is divisible by every one of its digits.
It is a junction number, because it is equal to n+sod(n) for n = 1131198 and 1131207.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1131223) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4848 + ... + 5075.
It is an arithmetic number, because the mean of its divisors is an integer number (148860).
21131222 is an apocalyptic number.
1131222 is an abundant number, since it is smaller than the sum of its proper divisors (1250538).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1131222 is a wasteful number, since it uses less digits than its factorization.
1131222 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9947.
The product of its digits is 24, while the sum is 12.
The square root of 1131222 is about 1063.5892064138. The cubic root of 1131222 is about 104.1955762604.
Adding to 1131222 its reverse (2221311), we get a palindrome (3352533).
The spelling of 1131222 in words is "one million, one hundred thirty-one thousand, two hundred twenty-two".
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