1209122 has 16 divisors (see below), whose sum is σ = 1952640. Its totient is φ = 559728.

The previous prime is 1209121. The next prime is 1209139. The reversal of 1209122 is 2219021.

It is a self number, because there is not a number n which added to its sum of digits gives 1209122.

It is not an unprimeable number, because it can be changed into a prime (1209121) 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, 1448 + ... + 2124.

It is an arithmetic number, because the mean of its divisors is an integer number (122040).

2^1209122 is an apocalyptic number.

1209122 is a deficient number, since it is larger than the sum of its proper divisors (743518).

1209122 is a wasteful number, since it uses less digits than its factorization.

1209122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1209122 is about 1099.6008366676. The cubic root of 1209122 is about 106.5344433695.

It can be divided in two parts, 1209 and 122, that added together give a palindrome (1331).

The spelling of 1209122 in words is "one million, two hundred nine thousand, one hundred twenty-two".