1201435217 has 4 divisors (see below), whose sum is σ = 1224103860. Its totient is φ = 1178766576.

The previous prime is 1201435201. The next prime is 1201435219. The reversal of 1201435217 is 7125341021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1075905601 + 125529616 = 32801^2 + 11204^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201435217 - 2⁴ = 1201435201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201435219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11334242 + ... + 11334347.

It is an arithmetic number, because the mean of its divisors is an integer number (306025965).

Almost surely, 2^1201435217 is an apocalyptic number.

It is an amenable number.

1201435217 is a deficient number, since it is larger than the sum of its proper divisors (22668643).

1201435217 is an equidigital number, since it uses as much as digits as its factorization.

1201435217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22668642.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1201435217 is about 34661.7255340815. The cubic root of 1201435217 is about 1063.0820519647.

Adding to 1201435217 its reverse (7125341021), we get a palindrome (8326776238).

The spelling of 1201435217 in words is "one billion, two hundred one million, four hundred thirty-five thousand, two hundred seventeen".