1220122 has 16 divisors (see below), whose sum is σ = 1899432.
Its totient is φ = 587520.
The previous prime is 1220099. The next prime is 1220147. The reversal of 1220122 is 2210221.
Adding to 1220122 its reverse (2210221), we get a palindrome (3430343).
Subtracting 1220122 from its reverse (2210221), we obtain a palindrome (990099).
It can be written as a sum of positive squares in 4 ways, for example, as 811801 + 408321 = 901^2 + 639^2
It is an Ulam number.
It is a junction number, because it is equal to n+sod(n) for n = 1220099 and 1220108.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8838 + ... + 8974.
21220122 is an apocalyptic number.
1220122 is a deficient number, since it is larger than the sum of its proper divisors (679310).
1220122 is a wasteful number, since it uses less digits than its factorization.
1220122 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 273.
The product of its (nonzero) digits is 16, while the sum is 10.
The square root of 1220122 is about 1104.5913271432.
The cubic root of 1220122 is about 106.8565346619.
The spelling of 1220122 in words is "one million, two hundred twenty thousand, one hundred twenty-two".