1225201 has 4 divisors (see below), whose sum is σ = 1248372. Its totient is φ = 1202032.

The previous prime is 1225183. The next prime is 1225219. The reversal of 1225201 is 1025221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1025221 = 19 ⋅53959.

It is an interprime number because it is at equal distance from previous prime (1225183) and next prime (1225219).

It can be written as a sum of positive squares in 2 ways, for example, as 303601 + 921600 = 551^2 + 960^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225201 - 2⁷ = 1225073 is a prime.

It is a super-2 number, since 2×1225201² = 3002234980802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225261) 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 in 3 ways as a sum of consecutive naturals, for example, 11506 + ... + 11611.

It is an arithmetic number, because the mean of its divisors is an integer number (312093).

2^1225201 is an apocalyptic number.

It is an amenable number.

1225201 is a deficient number, since it is larger than the sum of its proper divisors (23171).

1225201 is an equidigital number, since it uses as much as digits as its factorization.

1225201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23170.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1225201 is about 1106.8879798787. The cubic root of 1225201 is about 107.0045999129.

The spelling of 1225201 in words is "one million, two hundred twenty-five thousand, two hundred one".