1022122 has 4 divisors (see below), whose sum is σ = 1533186.
Its totient is φ = 511060.
The previous prime is 1022113. The next prime is 1022123. The reversal of 1022122 is 2212201.
Adding to 1022122 its reverse (2212201), we get a palindrome (3234323).
It is a Cunningham number, because it is equal to 10112+1.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2212201 = 113 ⋅19577.
It can be written as a sum of positive squares in only one way, i.e., 1022121 + 1 = 1011^2 + 1^2
It is a junction number, because it is equal to n+sod(n) for n = 1022099 and 1022108.
It is not an unprimeable number, because it can be changed into a prime (1022123) by changing a digit.
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 as a sum of consecutive naturals, namely, 255529 + ... + 255532.
21022122 is an apocalyptic number.
1022122 is a deficient number, since it is larger than the sum of its proper divisors (511064).
1022122 is an equidigital number, since it uses as much as digits as its factorization.
1022122 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 511063.
The product of its (nonzero) digits is 16, while the sum is 10.
The square root of 1022122 is about 1011.0004945597.
Note that the first 3 decimals coincide.
The cubic root of 1022122 is about 100.7320282705.
The spelling of 1022122 in words is "one million, twenty-two thousand, one hundred twenty-two".