1123201 has 4 divisors (see below), whose sum is σ = 1126404. Its totient is φ = 1120000.

The previous prime is 1123189. The next prime is 1123211. The reversal of 1123201 is 1023211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1023211 = 7 ⋅146173.

It can be written as a sum of positive squares in 2 ways, for example, as 921600 + 201601 = 960^2 + 449^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123201 - 2¹⁷ = 992129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000 + ... + 1801.

It is an arithmetic number, because the mean of its divisors is an integer number (281601).

2^1123201 is an apocalyptic number.

It is an amenable number.

1123201 is a deficient number, since it is larger than the sum of its proper divisors (3203).

1123201 is an equidigital number, since it uses as much as digits as its factorization.

1123201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3202.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1123201 is about 1059.8117757413. The cubic root of 1123201 is about 103.9487234899.

Adding to 1123201 its sum of digits (10), we get a palindrome (1123211).

Adding to 1123201 its reverse (1023211), we get a palindrome (2146412).

The spelling of 1123201 in words is "one million, one hundred twenty-three thousand, two hundred one".